New free tools
The 1019 most recently added tools on TNAADO Tools, newest first and grouped by date added. Dates are when each page was first published; the latest addition is from October 4, 2026.
Added October 4, 2026 · 34 new tools
Medicare Card Number Checker (Australia): Check Digit Test
Check whether an Australian Medicare card number has a valid format: first digit, weighted check digit and issue number. Local only; nothing is sent…
Australian TFN Validator: Check a Tax File Number Format
Check whether a 9-digit Australian tax file number passes the TFN check-digit calculation. Runs in your browser; nothing is sent or stored.
How to Write a Cheque: Amount in Words Converter
Turn a dollar amount into the words and the xx/100 cents line for a cheque. Handles amounts up to 999,999,999,999.99. Free, runs in your browser.
Gratuity Calculator India: Payment of Gratuity Act Formula
Estimate gratuity under the Payment of Gratuity Act: last drawn basic plus DA x 15/26 x completed years, with the six-month rounding rule and an…
SRT to VTT Converter (and VTT to SRT)
Free SRT to VTT converter and VTT to SRT converter. Paste or open a subtitle file, convert it in the browser, optionally shift all timings, and…
curl to Fetch, Python and Axios Converter
Free curl converter. Paste a curl command and get JavaScript fetch, axios or Python requests code, with headers, JSON body, basic auth and form data…
XML to JSON Converter (and JSON to XML)
Free XML to JSON converter and JSON to XML converter. Paste XML or JSON, keep attributes and repeated elements, and get exact error positions. Runs…
File Hash Checker: SHA-256, SHA-1, MD5 Checksum Verifier
Free file hash checker. Pick a file to compute its SHA-256, SHA-1, SHA-384, SHA-512 or MD5 checksum and compare it with the published value. The file…
JWT Expiry Checker: Convert exp, iat and nbf to Dates
Paste a JWT to see if it has expired, how long is left and its lifetime, convert epoch seconds to dates, and compute a new exp. Runs only in your…
Base64 to Image, PDF or File Decoder
Free Base64 to image, PDF and file decoder. Paste Base64 or a data URI, see the detected file type, preview images and download the decoded file…
Minecraft Offline UUID Generator for Cracked and Offline Servers
Generate the offline-mode UUID Minecraft Java Edition assigns to a player name, with dashes and without. Runs in your browser; nothing is sent.
Add Page Numbers to PDF Online (Free, No Upload)
Free tool to add page numbers to a PDF in your browser. Choose position, format (Page 3 of 10), start number, roman numerals and pages to skip. No…
PDF to Text Converter: Extract Text from a PDF (No Upload)
Free PDF to text converter. Extract the selectable text from a PDF in your browser, copy it or download a .txt file. No upload, no signup. Detects…
A1c to Average Glucose (eAG) Calculator, ADAG and mmol/mol
Convert HbA1c percent to estimated average glucose (eAG) in mg/dL and mmol/L, plus IFCC mmol/mol, using the published ADAG equation. Units only, no…
Blood Sugar Converter: mg/dL to mmol/L and Back
Convert blood glucose between mg/dL and mmol/L instantly, with the exact formula, a worked example and a chart. Units only, no interpretation.
Cholesterol Converter: mg/dL to mmol/L (and Triglycerides)
Convert total, LDL or HDL cholesterol and triglycerides between mg/dL and mmol/L with the correct factors (0.02586 and 0.01129). Units only.
Creatinine Converter: mg/dL to µmol/L and Back
Convert serum creatinine between mg/dL and µmol/L (factor 88.4). Worked example, chart and sources. This converts units; it does not calculate kidney…
FDA Drug Recall Lookup: Search Drug Recalls by Name or Firm
Search FDA drug recall enforcement reports by drug name, recalling firm or reason. See classification, status, dates, lot codes and distribution from…
FDA Food Recall Lookup: Search Food and Allergen Recalls
Search FDA food recall enforcement reports by food, brand, ingredient, allergen or reason (for example undeclared milk or listeria). Shows class…
FDA Medical Device Recall Lookup: Search by Device or Firm
Search FDA medical device recalls by device name, manufacturer or reason. See status, product code, root cause, lot or serial info and distribution…
Hemoglobin Converter: g/dL to g/L and mmol/L
Convert hemoglobin (haemoglobin) between g/dL, g/L and mmol/L. Worked example and chart. Units only; it does not interpret a result or screen for…
Lab Unit Converter: Calcium, Bilirubin, Testosterone, BUN and More
Convert lab results between US conventional and SI units: calcium, bilirubin, testosterone, BUN to urea, uric acid, ferritin, B12, magnesium and…
LOINC Code Lookup and Validator: Find Lab Test Codes
Search LOINC codes by lab test name (glucose, hemoglobin, creatinine) or check a LOINC code's check digit. Official NLM Clinical Tables data with…
RxNorm RxCUI Lookup: Find the RxCUI for a Drug Name
Find the RxNorm RxCUI for a drug name, or look up an RxCUI to see its name, term type, ingredient, brand and strength from the National Library of…
Vitamin D Converter: ng/mL to nmol/L and Back
Convert 25-hydroxyvitamin D between ng/mL and nmol/L (1 ng/mL = 2.496 nmol/L). Worked example, chart and sources. Units only, no interpretation.
Image Size Finder: Dimensions, File Size and Aspect Ratio
Choose an image to see its width and height in pixels, file size, aspect ratio, megapixels and print size at 72, 150 and 300 dpi. The file stays on…
GSTIN Validator (India): Check Format and Check Character
Validate an Indian GSTIN: state code, PAN pattern, entity number, the letter Z and the check character. Free, runs in your browser.
Canadian Fake Phone Number Generator (Safe 555-01XX Numbers)
Generate fictional Canadian phone numbers in the reserved 555-0100 to 555-0199 block, with a real area code of your choice. For testing and mock-ups.
Random Canadian Postal Code Generator (Format-Valid)
Generate random Canadian postal codes in the A1A 1A1 format that follow Canada Post letter rules, optionally limited to one province. Free test data.
Extract Email Addresses, URLs, Phone Numbers and Hashtags from Text
Free text extractor. Paste any text and pull out every email address, URL, phone number, hashtag, @mention or IPv4 address, with duplicates removed…
Fancy Text Generator: Bold, Italic, Script, Strikethrough Copy and Paste
Free fancy text generator. Type once and copy bold, italic, script, gothic, circled, strikethrough, upside-down and 20+ more Unicode styles for…
List to Comma Separated Converter (Quotes, SQL IN, Arrays)
Free converter: turn a column or list of values into a comma separated string, add single or double quotes, wrap as a SQL IN clause or array, or…
Remove Duplicate Lines Online (Sort, Trim, Ignore Case)
Free tool to remove duplicate lines from a list. Keep first or last, ignore case, trim spaces, drop empty lines, sort A-Z, and see how many were…
Remove Line Breaks and Extra Spaces from Text
Free line break remover. Paste text copied from a PDF or email and remove line breaks, collapse extra spaces, rejoin hyphenated words and keep…
Added October 3, 2026 · 13 new tools
Amazon FBA Profit & Fee Calculator
Estimate Amazon FBA profit from selling price, referral fee, fulfillment, storage and landed cost with editable U.S. assumptions.
Dropshipping Profit & Margin Calculator
Estimate dropshipping profit and contribution margin after supplier cost, shipping, ads, payment fees and refunds. Private and editable.
eBay Fee & Profit Calculator
Estimate eBay final value fees, shipping, costs and seller profit with editable U.S. rates. Private, local and transparent.
Shopify Profit Calculator
Estimate Shopify order profit after product, shipping, card, third-party transaction and monthly plan costs. Edit every assumption.
TikTok Shop Fee & Profit Calculator
Estimate TikTok Shop U.S. referral fees, affiliate or ad costs and seller profit with editable rates.
Marketplace Product Image Compliance Checker
Compare local product images with published Google Merchant, Shopify, Etsy and Amazon technical image requirements. No upload or API.
Variant & SKU Collision Checker
Find duplicate SKUs, barcodes, GTINs and product-option combinations in a local ecommerce CSV before import. Browser-only, no upload.
JPG to PDF Converter — Combine Photos Locally
Combine up to 50 JPG images into one PDF in your browser. Choose image-size, Letter, or A4 pages and download without uploading.
PDF to JPG Converter — Every Page, No Upload
Convert every PDF page to a JPG image locally in your browser. Choose image quality and resolution. No upload, signup, watermark, or account.
ASCII Table & Character Code Converter
Search the complete ASCII table and convert any ASCII character between decimal, hexadecimal, octal, binary and HTML entity forms.
Paragraph Length Analyzer: Words & Sentences per Paragraph
Count words and sentences in each paragraph, compare paragraph-length percentiles, flag a custom target band, and export local CSV results.
Word Count Without Citations
Estimate a word count without selected citation patterns or a references section. Review every exclusion. Your pasted text stays in your browser.
NHTSA Safety Ratings Lookup by Year, Make & Model
Look up official NHTSA 5-Star Safety Ratings by model year, make, model and vehicle configuration, including frontal, side and rollover scores.
Added October 2, 2026 · 114 new tools
ISBN Barcode Generator with EAN-5 Price Add-On
Validate an ISBN-10 or ISBN-13, convert ISBN-10 to Bookland EAN-13, and make a book barcode with an optional five-digit price add-on.
Barcode Reader from Image or Camera
Read UPC, EAN, Code 128, Code 39, ITF, Data Matrix, PDF417, Aztec and QR codes from an image or camera, locally in your browser.
Etsy Offsite Ads Fee Calculator (12% vs 15%)
Free Etsy fee and profit calculator for US sellers. Itemizes the $0.20 listing fee, 6.5% transaction fee, 3% + $0.25 processing and the 12% or 15%…
Whatnot Fee Calculator (Commission, Processing, Profit)
Free Whatnot fee calculator: seller commission, payment processing, net payout and profit on a sale, plus the price you need for a target profit…
Curtain Fabric Calculator
Curtain fabric calculator: fabric widths, total length in metres and yards, and lining from track width, drop, fullness, allowances and pattern…
Firewood Cord Calculator
Convert stack size or pickup and dump truck loads to cords, face cords and cubic feet, and check price per cord. Loose loads hold fewer cords than…
Voltage Drop & Wire Size Calculator
Free voltage drop calculator and wire size calculator: volts and percent drop for your distance, copper or aluminum, AWG, single or three phase, 12V…
GSM to oz/yd2 Fabric Weight Converter
Convert gsm (g/m2) to oz/yd2 and oz/ft2 and back, exactly. Denim oz to gsm, canvas oz to gsm, T-shirt weight classes and the weight of a piece of…
Kids Clothing Size by Height and Age (EU, UK, US)
Kids clothing size calculator: enter height or age to get the EU/UK height size, typical age range from CDC and WHO growth data, the US size (2T to…
What Age Is Size 104 in Kids Clothes? (EU/UK 104 cm)
What age is size 104 in kids clothes? EU/UK size 104 fits a child about 104 cm (3 ft 5 in) tall, typically 3.7 years to 4.6 years by CDC and WHO…
What Age Is Size 110 in Kids Clothes? (EU/UK 110 cm)
What age is size 110 in kids clothes? EU/UK size 110 fits a child about 110 cm (3 ft 7 in) tall, typically 4.6 years to 5.7 years by CDC and WHO…
What Age Is Size 116 in Kids Clothes? (EU/UK 116 cm)
What age is size 116 in kids clothes? EU/UK size 116 fits a child about 116 cm (3 ft 10 in) tall, typically 5.7 years to 6.6 years by CDC and WHO…
What Age Is Size 122 in Kids Clothes? (EU/UK 122 cm)
What age is size 122 in kids clothes? EU/UK size 122 fits a child about 122 cm (4 ft 0 in) tall, typically 6.6 years to 7.5 years by CDC and WHO…
What Age Is Size 128 in Kids Clothes? (EU/UK 128 cm)
What age is size 128 in kids clothes? EU/UK size 128 fits a child about 128 cm (4 ft 2 in) tall, typically 7.5 years to 8.6 years by CDC and WHO…
What Age Is Size 134 in Kids Clothes? (EU/UK 134 cm)
What age is size 134 in kids clothes? EU/UK size 134 fits a child about 134 cm (4 ft 5 in) tall, typically 8.6 years to 9.7 years by CDC and WHO…
What Age Is Size 140 in Kids Clothes? (EU/UK 140 cm)
What age is size 140 in kids clothes? EU/UK size 140 fits a child about 140 cm (4 ft 7 in) tall, typically 9.7 years to 10.9 years by CDC and WHO…
What Age Is Size 146 in Kids Clothes? (EU/UK 146 cm)
What age is size 146 in kids clothes? EU/UK size 146 fits a child about 146 cm (4 ft 9 in) tall, typically 10.9 years to 11.8 years by CDC and WHO…
What Age Is Size 152 in Kids Clothes? (EU/UK 152 cm)
What age is size 152 in kids clothes? EU/UK size 152 fits a child about 152 cm (5 ft 0 in) tall, typically 11.8 years to 12.7 years by CDC and WHO…
What Age Is Size 4T? Toddler Size 4T Height and Age
What age is size 4T? US toddler 4T is labelled for about 4-year-olds. The CDC/WHO median height at age 4 is 103 cm for boys and 103 cm for girls…
What Age Is Size 98 in Kids Clothes? (EU/UK 98 cm)
What age is size 98 in kids clothes? EU/UK size 98 fits a child about 98 cm (3 ft 3 in) tall, typically 2.9 years to 3.7 years by CDC and WHO median…
Australian to US Bra Size Converter
Convert an Australian or New Zealand bra size (band 8, 10, 12 and so on) to US, UK, EU, French and Japanese sizing. The band is a dress-size number…
EU to US Bra Size Converter
Convert a European bra size (band in cm, such as 75C or 80E) to US sizing. Band cm to inches and cup letters for each step, with UK, FR, AU and JP…
Japanese Bra Size Converter to US, UK, EU
Convert a Japanese bra size (band in cm such as 70C, plus cup letter) to US, UK, EU, French and Australian sizing, with the Japanese cup-step caveat…
Korean Bra Size Converter to US, UK, EU
Convert a Korean bra size (such as 70B or 75C, band in cm) to US, UK, EU, French, Australian and Japanese sizing. Same cm band as EU; check the brand…
South African Bra Size Converter to US, EU, AU
Convert a South African bra size to US, EU, French, Australian and Japanese sizing. South African labels commonly follow the UK scheme; shown with…
UK to US Bra Size Converter
Convert a UK bra size to US. Band numbers are identical; cup letters differ from DD upward (UK E = US DDD, UK F = US G, UK FF = US H). Shows EU, FR…
Bra Size Converter: US, UK, EU, FR, AU, JP
Convert a bra size between US, UK, EU, French, Australian and Japanese sizing at once. Band and cup tables built from the arithmetic, with the UK FF…
Circle Skirt Fabric Calculator
Circle skirt fabric calculator: waist radius, cut radii and yardage in metres and yards for full, half, quarter and double circle skirts, with the…
Makeup & Skincare Expiry Date Calculator (PAO)
Free cosmetic expiration date checker. Enter the open date and the PAO months from the label (6M, 12M, 24M) to get a discard-by date, with an…
Cost Per Wear Calculator: Compare Two Items
Work out the cost per wear of clothes, shoes or bags: price plus tax and care, divided by wears. See it now, projected, how many wears reach a target…
Crochet Hook Size Conversion Chart
Crochet hook size conversion chart: millimetre to US hook letter and number from 2.25 mm (B-1) to 30 mm (T/X), from the Craft Yarn Council hooks and…
Hand Size to Glove Size Calculator: How to Measure Hand for Gloves
Enter your hand circumference or length in cm or inches to get your EN ISO 21420 glove size 6 to 11 (XS to XXL), with a printable paper-strip…
Hat Size Calculator: Head Circumference to US, UK, EU
Enter your head circumference in cm or inches to get your US fitted, UK and EU hat size, with the formula shown and how to measure your head.
Knitting Needle Size Conversion Chart
Knitting needle size conversion chart: millimetre to US needle size from 1.5 mm (US 000) to 35 mm (US 70), from the Craft Yarn Council hooks and…
Laundry Care Symbol Decoder: What Does This Symbol Mean?
Build any laundry care symbol (tub, triangle, square, iron, circle, with dots, bars, lines and crosses) and get the plain-English instruction. ISO…
Pool Volume Calculator (Gallons and Litres)
Pool volume calculator: gallons in a pool or hot tub for rectangle, round, oval and kidney shapes. US gallons, imperial gallons, litres, weight of…
Propane Tank Run Time Calculator
Free propane tank run time calculator. How long will a 20 lb, 30 lb, 40 lb, 100 lb or bulk propane tank last? Add grills, heaters, fire pits and…
Quilt Backing and Binding Calculator
Free quilt backing calculator: panels, total yardage and a 108 in wide-back option from your quilt top size, overhang and fabric width, plus a…
Bra Sister Size Calculator: Up-Band and Down-Band Sizes
Enter your bra band and cup in US or UK lettering to get your sister sizes (band +2, cup down one; band -2, cup up one) with the same-volume rule…
Skincare Ingredient Conflict Checker (Can I Use Retinol With Vitamin C?)
Pick two or more skincare actives and see a pairwise matrix: fine together, layer with care, or usually separate, with the reason, the source, and a…
SSDI Back Pay Calculator: Months Owed and Net After Fee
Estimate SSDI back pay: applies the 5-month waiting period, up to 12 months of retroactivity, past-due benefits through the month before approval…
Tire Size Comparison and Speedometer Error Calculator
Compare two tire sizes (265/70R17 vs 285/75R16 or 33x12.50R15). Get overall diameter, width, sidewall, revolutions per mile, lift and the true speed…
Yarn Weight Conversion Chart
Yarn weight conversion chart: Craft Yarn Council categories 0 to 7 with knit and crochet gauge, needle and hook sizes in mm and US, and the yarn…
Yarn Yardage Calculator
Yarn yardage calculator: how many skeins you need from pattern yardage, yards left in a partial ball, and how much yarn a different weight needs…
Conception Date Calculator (From Due Date or Birthday)
Free conception date calculator. Enter a due date, birth date or last period and get the estimated conception date and likely intercourse window…
Essential Oil Dilution Calculator (Drops per ml, % and Oz)
Free essential oil dilution calculator. Get drops of essential oil for any carrier amount (ml, oz, tsp, tbsp) and dilution %, or work out the % from…
IVF Due Date Calculator (3-Day, 5-Day, Frozen Transfer)
Free IVF due date calculator for 3-day, 5-day and 6-day embryo transfers, fresh or frozen, or an egg retrieval date. Shows due date, gestational…
Retinol Schedule Generator (Beginner and Skin Cycling Calendar)
Free retinol schedule for beginners and a 4-night skin cycling schedule. Pick your experience and sensitivity, get a printable 4-week calendar with…
Sunscreen Amount Calculator: How Much for Face and Body
Free sunscreen amount calculator. Pick body areas and see grams, ml, teaspoons and two-finger strips for the labelled-SPF test dose, plus bottles for…
Sunscreen Reapplication Timer by UV Index
Free sunscreen reapplication timer. Enter your start time, the UV index and your activity to get reapply clock times and a countdown. Health Canada…
RMD Calculator 2026: Table, Age 73 Factor and Joint Life
Required minimum distribution calculator: prior 12/31 balance divided by the IRS Uniform Lifetime or Joint Life factor, with the age 73 and 75 start…
Full Retirement Age Calculator by Birth Year
Free Social Security full retirement age calculator. Enter your birth year and month to see your FRA, the exact date, your age-62 and age-70 dates…
Social Security Survivor Benefit Calculator
Estimate a Social Security survivor benefit: widow(er) 71.5% at 60 rising to 100% at full retirement age, the RIB-LIM cap when the worker claimed…
Maximum Weekly Unemployment Benefit by State (US)
Maximum and minimum weekly unemployment benefit, maximum weeks and top total payout for every U.S. state, from the Department of Labor July 2026…
Wage Garnishment Limit Calculator (Federal and State)
Find the most an employer can garnish from your paycheck under the federal 25% rule, support-order limits, and Texas, Pennsylvania and South…
1099-K and 1099-NEC Threshold Checker (2026) | TNAADO
Does a 1099-K or 1099-NEC have to be filed for you? Check the 2026 thresholds: 1099-K at $20,000 and over 200 transactions, 1099-NEC at $2,000. Tax…
1099 Tax Set-Aside Calculator 2026: What % to Save
How much to set aside for taxes on 1099 income in 2026. Enter net profit, filing status and state to get one percentage to save from every payment…
Estimated Tax Underpayment Penalty Calculator (Form 2210)
Check IRS safe harbor (90% / 100% / 110%) and figure the Form 2210 underpayment penalty by installment from your payment dates and the published IRS…
Quarterly Estimated Tax Calculator 2026 for Self-Employed
Free quarterly estimated tax calculator for 2026: enter your expected tax and last year's tax and AGI to get four 1040-ES payments (Apr 15, Jun 15…
Standard Mileage vs Actual Expenses Calculator (Gig Drivers)
DoorDash, Uber, Lyft, Instacart, Spark and Flex drivers: compare the 2026 IRS standard mileage rate with actual car expenses, see the higher…
VIN Decoder: Model Year, Country and Manufacturer Code
Paste a 17-character VIN to read the country of origin, WMI manufacturer code, model year (position 10 with the position 7 rule), plant code and…
Best Colours to Wear for Your Hair, Eyes and Skin
Pick your hair, eye and skin colour and get 10 flattering clothing colours and 4 to avoid, with the method shown. Includes best colours for green…
Best Colours for Blue eyes and blonde hair
The best clothing colours for blue eyes and blonde hair: 10 flattering shades and 4 to avoid, with the reasoning shown. Change skin tone and…
Best Colours for Blue eyes and brown hair
The best clothing colours for blue eyes and brown hair: 10 flattering shades and 4 to avoid, with the reasoning shown. Change skin tone and undertone…
Best Colours for Brown eyes and black hair
The best clothing colours for brown eyes and black hair: 10 flattering shades and 4 to avoid, with the reasoning shown. Change skin tone and…
Best Colours for Green eyes and brown hair
The best clothing colours for green eyes and brown hair: 10 flattering shades and 4 to avoid, with the reasoning shown. Change skin tone and…
Best Colours for Green eyes and red hair
The best clothing colours for green eyes and red hair: 10 flattering shades and 4 to avoid, with the reasoning shown. Change skin tone and undertone…
Best Colours for Hazel eyes and brown hair
The best clothing colours for hazel eyes and brown hair: 10 flattering shades and 4 to avoid, with the reasoning shown. Change skin tone and…
Bright Spring Color Palette: Swatches and Hex Codes
Bright Spring colour palette with six hex swatches, measured lightness, chroma and warmth, and how it differs from the neighbouring seasons. Runs in…
Bright Winter Color Palette: Swatches and Hex Codes
Bright Winter colour palette with six hex swatches, measured lightness, chroma and warmth, and how it differs from the neighbouring seasons. Runs in…
True Summer vs Light Summer: Colour Season Palette Compare
Compare any two of the 12 colour seasons side by side, such as True Summer vs Light Summer or Deep vs Dark Winter, with measured lightness, chroma…
Cool Summer Color Palette: Swatches and Hex Codes
Cool Summer colour palette with six hex swatches, measured lightness, chroma and warmth, and how it differs from the neighbouring seasons. Runs in…
Cool Winter Color Palette: Swatches and Hex Codes
Cool Winter colour palette with six hex swatches, measured lightness, chroma and warmth, and how it differs from the neighbouring seasons. Runs in…
Deep Autumn Color Palette: Swatches and Hex Codes
Deep Autumn colour palette with six hex swatches, measured lightness, chroma and warmth, and how it differs from the neighbouring seasons. Runs in…
Deep Winter Color Palette: Swatches and Hex Codes
Deep Winter colour palette with six hex swatches, measured lightness, chroma and warmth, and how it differs from the neighbouring seasons. Runs in…
Light Spring Color Palette: Swatches and Hex Codes
Light Spring colour palette with six hex swatches, measured lightness, chroma and warmth, and how it differs from the neighbouring seasons. Runs in…
Light Summer Color Palette: Swatches and Hex Codes
Light Summer colour palette with six hex swatches, measured lightness, chroma and warmth, and how it differs from the neighbouring seasons. Runs in…
Skin Tone Hex Finder: Monk Scale, Depth and Undertone
Enter a skin tone hex code and get the nearest of the 10 Monk Skin Tone Scale swatches (CIEDE2000), a depth number and a warm, neutral, cool or olive…
Soft Autumn Color Palette: Swatches and Hex Codes
Soft Autumn colour palette with six hex swatches, measured lightness, chroma and warmth, and how it differs from the neighbouring seasons. Runs in…
Soft Summer Color Palette: Swatches and Hex Codes
Soft Summer colour palette with six hex swatches, measured lightness, chroma and warmth, and how it differs from the neighbouring seasons. Runs in…
Warm Autumn Color Palette: Swatches and Hex Codes
Warm Autumn colour palette with six hex swatches, measured lightness, chroma and warmth, and how it differs from the neighbouring seasons. Runs in…
Warm Spring Color Palette: Swatches and Hex Codes
Warm Spring colour palette with six hex swatches, measured lightness, chroma and warmth, and how it differs from the neighbouring seasons. Runs in…
What Colour Goes With It? Clothing Colour Matcher
Pick a garment and its colour and see which colours go with it: neutrals, analogous, complementary and triad matches from named clothing colours, on…
Amazon Backend Keyword Byte Counter
Count UTF-8 bytes in Amazon U.S. Generic keyword search terms, stay below 250 bytes, and review duplicate words, punctuation, stop words, and risky…
Amazon FBA Carton Size Checker (US)
Check a US Amazon FBA carton against the current 36 × 25 × 25 inch and 50 lb rules, jewellery limit, and single-oversize review conditions.
Etsy Digital Download File Checker
Check Etsy instant-download files for the five-file limit, 20 MB per-file cap, supported extensions, and buyer-visible file-name rules. Files stay on…
Shopify Inventory CSV Validator & Diff Checker
Validate a Shopify inventory CSV and compare an edited file with its original export. Check whole-number quantities, required columns, packed…
Shopify Product CSV Splitter (Keep Products Together)
Split a Shopify product CSV into import-ready parts under 15 MB while keeping every product handle and its variants and image rows together. Runs…
Shopify Variant Limit Calculator
Calculate Shopify product variants from up to three option-value counts and see whether the product stays within Shopify’s 2,048-variant limit. Runs…
Lunch & Rest Break Laws by State: Am I Owed a Break?
Pick a state and enter your shift length to see whether a meal or rest break is required, how long it must be, when it starts and whether it is paid…
Tipped Minimum Wage by State 2026: Cash Wage & Tip Credit
Pick a state to see its minimum cash wage for tipped workers, the maximum tip credit and the employer top-up owed if tips fall short, with the…
PDF to PNG Converter — Every Page, Local
Convert every PDF page to a lossless PNG image in your browser. Choose resolution, preview pages and download individually. No upload.
JPG to WebP Converter - Local and Free | TNAADO
Convert JPG or JPEG photos to WebP locally. Choose quality, verify the output, and download a correctly named WebP without uploading your photo.
PNG to WebP Converter - Private Browser Tool | TNAADO
Convert PNG to WebP locally in your browser. Preserve transparency, choose output quality, verify the WebP file, and download without uploading your…
Safe SVG to PNG Converter - Local Browser Tool | TNAADO
Convert a self-contained SVG to PNG locally after removing scripts, foreign objects, external images, remote URLs, and event handlers. Choose 1x to…
WebP to JPG Converter with Background Choice | TNAADO
Convert WebP to JPG locally in your browser. Choose the background used for transparent pixels, set JPEG quality, and download without an upload.
Bulk Image Resizer - Resize 20 Images Locally | TNAADO
Resize up to 20 JPG, PNG, or WebP images to one exact width and height in your browser. Preserve each file format and download individual verified…
Circle Crop Image - Transparent PNG Profile Photo | TNAADO
Center-crop a JPG, PNG, or WebP into a true circular image with transparent corners. Processing stays in your browser and output is a verified PNG.
SEVIS ID Validator
Check and format a SEVIS ID as N followed by up to 11 digits. Private, local-only validation for Form I-20 and DS-2019 identifiers.
USCIS A-Number Formatter & Validator
Format a 6- to 9-digit USCIS A-Number, add required leading zeros, and check its published shape. Private and browser-only.
Rent Increase Notice Period by State (US)
Find the latest date a landlord must give written notice of a rent increase in California, New York, Oregon, Washington or Colorado, with the state…
Security Deposit Return Deadline by State (US)
Pick a state and move-out date to see the last day a landlord must return or itemize a security deposit, the deposit cap, interest rules and the…
CIDR Overlap Checker for IPv4 & IPv6
Check whether two IPv4 or IPv6 CIDR blocks overlap, which block contains the other, and the exact shared range. Runs locally in your browser.
IPv6 Subnet & Prefix Calculator
Calculate an IPv6 prefix's network, first and last address, size, host bits, and child subnets. Browser-only, exact 128-bit arithmetic.
QR Code with Logo Generator and Scan Check
Create a QR code with a centered logo, high error correction and a local scan verification before download. Runs entirely in your browser.
ACA Subsidy Cliff Calculator 2026
Check your ACA subsidy cliff for 2026: percent of poverty level, expected contribution, estimated premium tax credit and how much income you can add…
Gig Driver Profit Per Hour Calculator 2026
Find your real profit per hour and per mile as an Uber, Lyft, DoorDash, Instacart, Spark or Flex driver, with break-even pay per mile, tax set-aside…
Medicare Late Enrollment Penalty Calculator (Part B and D)
Estimate your Medicare Part B and Part D late enrollment penalty from your enrollment dates and creditable coverage months. Monthly and lifetime cost…
Transfer Tax Calculator by State: FL, GA, PA, NJ, NY, TN, IA, ME, CA
Transfer tax calculator for nine U.S. states: Florida doc stamps, Georgia, Pennsylvania, New Jersey, New York mansion tax, NYC RPT, Tennessee, Iowa…
Roth Conversion Bracket Room Calculator with IRMAA
See how much you can convert to Roth before the next 2026 federal tax bracket and before each Medicare IRMAA threshold, then the tax on the amount…
Simplified vs Regular Home Office Deduction Calculator
Compare the simplified home office deduction ($5 per sq ft, max $1,500) with the regular Form 8829 method, with the gross income limit applied, and…
Solo 401(k) and SEP IRA Contribution Calculator 2026
Self-employed 2026 limits: SEP IRA is 20% of net profit after half of SE tax, up to $72,000. Solo 401(k) adds a $24,500 deferral plus catch-up…
State Unemployment Benefit Estimator (US)
Estimate your weekly unemployment benefit, maximum weeks and total in TX, FL, NY, IL, WI, NV or SD from quarterly wages, using the published state…
Vehicle Sales Tax, Title and Registration Fee Calculator by State
Estimate car sales tax, title fee and base registration for Texas, Virginia, Florida and Kansas. Applies each state's trade-in rule, with statute…
Added October 1, 2026 · 87 new tools
Hair Dye Developer Ratio Calculator: Mix and Dilute
Work out grams of hair colour and developer for 1:1, 1:1.5, 1:2 or a custom ratio, or dilute 30 or 40 volume developer with water to 20 volume. Runs…
Historical Exchange Rate Calculator: CAD on Any Date
Convert Canadian dollars to or from USD, EUR, GBP, AUD, JPY, CHF, CNY, INR or MXN at the Bank of Canada daily average rate on any date since 2017…
Roommate Rent Split Calculator
Split rent between roommates by room size, income or equally, with private bathroom and parking adjustments. Shows a worked example and a summary you…
Tire DOT Code Decoder: Tire Age and Date Code
Read the DOT code on your tire sidewall. Get the week and year it was made, its age today and how that compares with the six-to-ten-year guidance…
Caffeine Half-Life Calculator (When Is Caffeine Out?)
Free caffeine half-life calculator. See how much caffeine is left in your body after a drink, using exponential decay and a half-life you set. Cited…
Alberta Seniors Benefit Estimator (2026)
Free Alberta Seniors Benefit estimator using the published July 2026 maximums and phase-out rates. Enter income and deductions, see your annual and…
CESG Catch-Up Calculator (Carry-Forward Grant Room)
Free CESG catch-up calculator. See how much unused Canada Education Savings Grant room you can claim this year (up to $1,000 on $5,000) and how much…
LIF Maximum Withdrawal Calculator (Ontario)
Free Ontario LIF maximum annual withdrawal calculator. Applies the formula in Pension Benefits Act Reg. 909, Schedule 1.1, s. 6 (balance divided by…
Lifelong Learning Plan (LLP) Repayment Calculator
Free RRSP Lifelong Learning Plan repayment schedule. Your repayment start year, the 1/10 yearly minimum over 10 years, and the tax when a year is…
Pension Adjustment (PA) Calculator
Free pension adjustment (PA) calculator for Canadian DC and simple DB plans. Uses the CRA 9 x benefit - $600 formula and shows how much your RRSP…
Retirement Contribution Limits Checker
Check 2026 retirement contribution limits for the US (401(k), IRA, SIMPLE), Canada (RRSP, TFSA) and the UK (pension annual allowance), each with its…
RRSP vs TFSA Calculator
Compare an RRSP and a TFSA head to head: your marginal rate now vs in retirement, with the tax refund reinvested. 2026 limits from the CRA.
Credit Card Annual Fee Break-Even Calculator
Is a credit card annual fee worth it? Enter the fee, your spend by category, earn rates, point value and welcome bonus to see net value and…
HELOC Calculator Canada 2026: Borrowing Limit & Payments
Canadian HELOC calculator: maximum borrowing at 65% of home value and 80% combined with your mortgage, interest-only and amortizing payments, total…
Sample Size Calculator (Margin of Error, Confidence Level)
Free sample size and margin of error calculator for surveys. Cochran formula with finite-population correction at 90%, 95% or 99% confidence, with…
Alberta Closing Costs Calculator 2026: Land Title & Mortgage Registration Fees
Free Alberta closing costs calculator: no land transfer tax, just land title and mortgage registration fees ($50 + $5 per $5,000), legal fees, title…
BC Closing Costs Calculator 2026: Property Transfer Tax, Legal Fees, GST
Free BC closing costs calculator: property transfer tax tiers (1/2/3% plus 2% over $3M), first-time buyer and newly built exemptions, legal fees…
Real Estate Commission Calculator Canada
Free Canadian real estate commission calculator: tiered rates you enter (for example 5% on the first $100,000 and 2.5% on the balance), GST/HST by…
BC Family Benefit Calculator 2026-27
Free BC family benefit calculator for July 2026 to June 2027: up to $1,750 for the first child, $1,100 for the second, $900 each after, phased out…
CRA Arrears Interest Calculator (Daily Compounding, 2021-2026 Rates)
Estimate CRA arrears interest on unpaid tax: daily compounding at the quarterly overdue rate (prescribed rate + 4%), with a rate table from Q4 2021…
Manitoba Income Tax Calculator 2026
Manitoba income tax calculator for 2026. Federal plus Manitoba tax, net income, average and marginal rate, with the 10.8% first bracket and the…
New Brunswick Income Tax Calculator 2026
New Brunswick income tax calculator for 2026. Federal plus New Brunswick tax, net income, average and marginal rate, with the 9.4% first bracket and…
Newfoundland and Labrador Income Tax Calculator 2026
Newfoundland and Labrador income tax calculator for 2026. Eight provincial brackets from 8.7%, the $13,094 basic personal amount and federal tax…
Income Tax Calculator Nova Scotia 2026
Nova Scotia income tax calculator for 2026. Five provincial brackets, the flat $11,932 basic personal amount and federal tax, with effective and…
Ontario Health Premium Calculator 2026 (up to $900)
Ontario Health Premium calculator for 2026: enter your taxable income and see your premium, from $0 up to the $900 maximum, using the CRA T4032ON…
Prince Edward Island Income Tax Calculator 2026
Prince Edward Island income tax calculator for 2026. Federal plus PEI tax, net income, average and marginal rate, with the new 20% bracket above…
Political Contribution Tax Credit Calculator (Federal)
Free federal political contribution tax credit calculator for Canada: 75% of the first $400, 50% to $750, 33 1/3% above, maximum $650. Worked table…
Saskatchewan Income Tax Calculator 2026
Saskatchewan income tax calculator for 2026. Federal and SK brackets, the $20,381 basic personal amount, marginal and average rate, with CRA T4127…
T1135 Penalty Calculator
Free T1135 penalty calculator. Estimate the CRA late-filing penalty ($25/day, $100 minimum, $2,500 maximum) and the gross-negligence penalty…
Canadian ID Number Formats Cheat Sheet
Length, layout and check-digit rules for the SIN, CRA Business Number, Ontario health card, BC PHN, postal code and phone numbers, with primary…
Check-Digit Algorithms Explained: Luhn, ISBN, EAN and IBAN
How the Luhn, ISBN-10, ISBN-13/EAN-13, IBAN mod 97 and Mod 11 check digits work, with a worked example and a comparison table for credit cards, SINs…
CPP, CPP2 and EI Contribution Limits by Year
Maximum pensionable earnings, basic exemption, CPP and CPP2 rates and maximums, and EI insurable earnings and premiums for 2019 to 2027, from CRA…
Federal Income Tax Brackets and Basic Personal Amount by Year
Canada federal income tax brackets and rates for 2020 to 2026, the 2023 to 2026 indexation rates, and the federal basic personal amount, copied from…
NAICS Canada Code Lookup: 2022 Industry Code Finder
Find your NAICS Canada 2022 industry code by keyword or code. Browse all 2,059 classes from sector to six-digit Canadian industry with the full…
Provincial and Territorial Income Tax Brackets 2026 and 2025
Income tax brackets and rates for every Canadian province and territory except Quebec, for the 2026 and 2025 tax years, copied from the CRA with…
RRSP, TFSA and FHSA Limits by Year
RRSP dollar limits 2015 to 2027, TFSA annual limits and cumulative room since 2009, and FHSA annual and lifetime limits, copied from CRA tables with…
12-Season Colour Analysis Quiz, No Photo or Email
A 12-question colour season quiz with no photo and no email. Scores warm-cool, light-deep and soft-clear, then gives your best of 12 seasons, a…
CSS Box Shadow Generator
Free CSS box-shadow generator with multi-layer shadows, inset, offset, blur, spread and colour with opacity, plus a border-radius generator. Live…
What Level Is My Hair? Hair Colour Level Finder
Find your hair colour level (1-10) from a swatch or a hex colour. Maps CIELAB L* to the nearest level, shows the underlying pigment when lifting and…
Shirt and Tie Color Combinations: Tie Color for Navy Suit
Pick a suit, shirt and occasion and get ranked tie colours on a live swatch strip, with shirt-to-tie value contrast and a too-close warning, plus…
Skin Undertone Test (Warm, Cool, Neutral, Olive)
Free skin undertone test online: a 5-question warm, cool, neutral or olive quiz with a confidence note, plus an optional CIELAB hue-angle check from…
Toner for Orange, Yellow and Brassy Hair Picker
What toner to use on orange, yellow or brassy hair? Pick your current tone and target level to get the neutralising colour from the colour wheel, and…
JSON to YAML Converter (and YAML to JSON)
Free JSON to YAML converter, and YAML to JSON. Block-style output, ambiguous values like yes, null and 007 quoted, multi-line strings kept readable…
TOML to JSON Converter (and JSON to TOML)
Convert TOML to JSON or JSON to TOML in your browser. Parses TOML v1.0.0 (tables, arrays of tables, inline tables, datetimes, hex/octal/binary) and…
JSON Diff and JSON Compare (RFC 6902 Patch)
Free JSON diff and JSON compare tool. Ignores key order and whitespace, reports added, removed and changed values by JSON Pointer path, and writes an…
JSON to TypeScript Interface Generator
Free JSON to TypeScript generator. Paste sample JSON and get interfaces or type aliases with optional keys, union types, T[] arrays and nested…
chmod Calculator: Octal and Symbolic Permissions
Tick read, write and execute boxes for owner, group and other, plus setuid, setgid and sticky, and get the octal mode, the rwxr-xr-x string and the…
JSON Escape / Unescape (RFC 8259)
Escape text into a JSON string literal or reverse it, with the error position. Follows RFC 8259 section 7, optional ASCII-only output with surrogate…
PX to REM Converter (px, rem, em)
Free px to rem converter. Convert px, rem and em both ways with an adjustable root font size (default 16px), plus a 12 to 64px size table and an…
HTML Entity Encoder & Decoder
Free HTML entity encoder and decoder. Escape & < > " or every non-ASCII character as named or numeric references, decode with the WHATWG table (2,231…
Home Heating Cost Comparison per GJ and kWh
Compare natural gas, propane, heating oil, electric resistance, heat pump and wood on one basis: cost per GJ and per kWh of delivered heat, using…
VAT Registration Threshold Checker
Enter your trailing 12-month turnover and see whether you are over the VAT or GST registration threshold in the UK, Ireland, New Zealand or Canada…
TLS Cipher Suite Checker
Free TLS cipher suite checker. Paste OpenSSL names, IANA names or hex codes and see each suite's IANA registry entry (value, DTLS-OK, Recommended…
htaccess Redirect Generator (301, RewriteRule, HTTPS, www)
Free .htaccess redirect generator: paste a list of old and new URLs and get Redirect 301, RedirectMatch or RewriteRule lines, plus http to https and…
Container Load Calculator | Cartons per Container
Calculate boxes per pallet: ties (Ti), high (Hi), cases per pallet, pallets for an order quantity, loaded height and weight, with a layer diagram…
CSV to Markdown Table Converter (GFM, TSV, Excel)
Free CSV to Markdown table converter. Paste CSV, TSV, semicolon data or cells copied from Excel and get a GitHub Flavored Markdown table with…
Markdown to HTML Converter with Live Preview
Free Markdown to HTML converter with live preview. CommonMark 0.31.2 with optional GitHub-style tables, task lists and strikethrough. Raw HTML and…
Capital Gains Tax Calculator 2026 (U.S.)
Estimate 2026 U.S. federal tax on short-term and long-term capital gains: 0%, 15% and 20% rates by taxable income and filing status, with an optional…
Child Tax Credit and ACTC Calculator 2026
Estimate the 2026 Child Tax Credit and refundable Additional Child Tax Credit: $2,200 per child, $200,000 / $400,000 phase-out at $50 per $1,000…
Dependent Care FSA vs Child Care Credit Calculator 2026
Compare the $7,500 dependent care FSA with the child and dependent care credit for 2026. See which saves more at your income, with the IRC 129 and…
Earned Income Tax Credit Estimator 2026
Estimate your 2026 Earned Income Tax Credit (EITC) from filing status, qualifying children, earned income, AGI and investment income, and see exactly…
Federal Income Tax Calculator 2026 (Brackets)
Estimate 2026 U.S. federal income tax by bracket: standard deduction, taxable income, marginal vs effective rate and a dollar-by-dollar bracket…
2026 Federal Tax Brackets & Standard Deduction Calculator
2026 federal income tax brackets and standard deduction for every filing status, with a marginal and effective tax rate calculator. IRS Rev. Proc…
FICA Tax Calculator 2026 (Employee, Employer, Self-Employed)
Calculate 2026 FICA payroll tax: Social Security 6.2% up to $184,500, Medicare 1.45% and Additional Medicare 0.9% over $200,000, for employees…
FOMC Meeting Dates 2026-2027 and Fed Funds Rate History
FOMC meeting dates for 2026 and 2027 plus every federal funds target rate change since 1982, with CSV download.
Home Sale Capital Gain Exclusion Calculator
Estimate the Section 121 home sale exclusion ($250,000 single, $500,000 joint), taxable gain and federal tax at 0%, 15% or 20% using 2026 IRS…
HSA Contribution Limit Calculator 2026
2026 HSA limit: $4,400 self-only, $8,750 family, +$1,000 at 55. Work out your own limit for a mid-year start, Medicare, employer contributions, and…
I Bond Interest Rate History (Updated 2026)
Every Series I savings bond fixed rate, inflation rate and combined rate since 1998, with a rate calculator and CSV.
IRS Standard Mileage Rate History (Updated 2026)
IRS business, charity and medical or moving mileage rates for every period since 2011, with a deduction calculator and CSV.
Medicare IRMAA Calculator 2026
Find your 2026 Medicare Part B and Part D IRMAA surcharge from your MAGI from two years ago and filing status. Monthly and yearly cost, using the CMS…
Net Investment Income Tax (NIIT) Calculator 3.8%
Calculate the 3.8% net investment income tax: the lesser of net investment income or MAGI over $200,000 single, $250,000 joint or $125,000 separate…
No Tax on Overtime Calculator 2025-2028
Enter your hourly rate and overtime hours to see your federal no-tax-on-overtime deduction. Only the half-time premium counts. $12,500 cap ($25,000…
No Tax on Tips Deduction Calculator 2025-2028
Free no tax on tips deduction calculator: up to $25,000 of qualified tips, $100 phase-out per $1,000 of MAGI over $150,000 ($300,000 joint), and the…
Non-Itemizer Charitable Deduction Calculator 2026
Calculate the 2026 federal charitable deduction you can take without itemizing: up to $1,000 ($2,000 joint) of cash gifts, with tax saved, exclusions…
U.S. Prime Rate History (Updated 2026)
Every change in the U.S. bank prime loan rate since 1955, with a date lookup, CSV download and source.
U.S. Rates History Hub (Updated 2026)
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Roth Conversion Tax Calculator 2026
Estimate the 2026 federal tax on a Roth conversion: brackets crossed, tax due, effective rate and the pro-rata rule, using IRS 2026 rates.
SALT Deduction Cap Calculator 2026
Calculate your 2026 SALT deduction cap ($40,400, phased down 30% of MAGI over $505,000 to a $10,000 floor) and compare itemizing with the 2026…
Saver's Match Calculator 2027 (IRC 6433)
Estimate the federal Saver's Match that starts in 2027: 50% of your first $2,000 of retirement savings, phased out by income. Worked example…
Senior Deduction Calculator 2025-2028: $6,000 for Age 65+
Calculate the new $6,000 federal senior deduction for age 65 and older: 6% MAGI phase-out above $75,000 ($150,000 joint), per-spouse math, tax saved…
Social Security COLA Calculator 2027 and History
Estimate the 2027 Social Security COLA from CPI-W, see what it adds to your check after Medicare Part B, and browse every COLA since 1975. Sourced to…
Social Security Spousal Benefit Calculator
Estimate a Social Security spousal benefit: up to 50% of the worker's PIA at full retirement age, reduced 25/36 of 1% per month early (5/12 of 1%…
Social Security Taxable Maximum by Year (Updated 2026)
The Social Security wage base (contribution and benefit base) for every year since 1937, with a cap calculator and CSV.
Standard vs Itemized Deduction Calculator 2026
Compare the 2026 standard deduction ($16,100 single, $32,200 joint, $24,150 head of household) with your itemized deductions, including the $40,400…
Taxable Social Security Benefits Calculator
Estimate how much of your Social Security benefits are taxable using the IRS Publication 915 worksheet: provisional income, the $25,000/$32,000 and…
Trump Account Calculator 2026
Project a Trump account balance at 18: the $1,000 pilot deposit, $5,000 yearly limit, $2,500 employer cap, your own return and fee assumptions, with…
Wash Sale Rule Calculator (IRS)
Find the loss a wash sale disallows, the basis added to replacement shares and the 61-day window, including partial-share replacement, using IRS…
Added September 30, 2026 · 254 new tools
APCA Contrast Checker (Lc) with WCAG 2.2 Ratio
Check text and background colors with APCA Lc (draft 0.0.98G-4g) next to the WCAG 2.2 contrast ratio. See Lc levels by use case. APCA is not a WCAG 2…
Email Accessibility Checker (WCAG 2.2)
Free email accessibility checker. Paste HTML email source and get WCAG 2.2 findings for lang, alt text, layout tables, link text, inline colour…
LUFS Target Gain Calculator: -23, -24 LUFS
Enter your integrated LUFS and true peak to get the gain needed for -23 LUFS (EBU R 128), -24 LKFS (ATSC A/85) or a custom target. Runs locally.
Aztec Code Generator: Compact & Full Symbols
Free Aztec Code generator (ISO/IEC 24778). Choose compact or full mode and error correction, see the layers, mode message and Reed-Solomon codeword…
Bulk Barcode Label Generator: CSV to Avery 5160 & 5163
Paste a CSV of codes and print a sheet of barcode labels for Avery 5160 or 5163. Code 128, EAN-13, UPC-A, Code 39 and QR, check digits verified row…
Data Matrix Generator (ECC 200, GS1)
Free Data Matrix ECC 200 generator. Encode text or a GS1 element string into a square 10x10 to 52x52 symbol, see the codewords and Reed-Solomon check…
GS1-128 Barcode Generator (FNC1 + Application Identifiers)
Free GS1-128 barcode generator. Enter (01) GTIN, (10) batch, (17) expiry, (21) serial or (00) SSCC; AI lengths, dates and check digits are validated…
PDF417 Barcode Generator
Free PDF417 barcode generator: text and byte compaction, error-correction levels 0 to 8, choose rows and columns, download SVG or PNG. Runs in your…
UPC-E to UPC-A Converter
Free UPC-E to UPC-A converter. Expands an 8-digit UPC-E to the 12-digit UPC-A using the GS1 zero-suppression rules, verifies the check digit, and…
Which Barcode Do I Need? UPC, EAN, Code 128, QR
Compare UPC-A, EAN-13, Code 128, GS1-128, QR, Data Matrix, ITF-14 and Code 39 by use, data capacity and GS1 membership, then take a 4-question quiz…
Cash Conversion Cycle Calculator (DIO+DSO-DPO) | TNAADO
Calculate the cash conversion cycle (DIO + DSO minus DPO) from days or balances and see the cash released per day. Free, private, in your browser.
Commercial Lease Comparison (NNN) Calculator
Compare two commercial lease offers side by side: base rent, NNN/CAM pass-throughs, escalations, free rent and TI allowance, shown as effective rent…
Coinsurance Penalty Calculator: Commercial Property | TNAADO
Estimate the coinsurance penalty on a commercial property claim: required limit, carried-to-required ratio, deductible and payment, with a worked…
Days Sales Outstanding (DSO) Calculator
Calculate days sales outstanding (receivables divided by credit sales times days) or use the countback method. Free, private, runs in your browser.
Inventory Turnover Calculator & Days on Hand
Calculate inventory turnover (COGS divided by average inventory) and days inventory outstanding, with a worked retail example. Free, in your browser.
Invoice Factoring Cost Calculator
Compare two invoice factoring offers side by side: cash now, reserve released later, total cost, cost as a percent of the invoice and a simple…
Stripe vs PayPal Fee Comparison Calculator
Compare Stripe vs PayPal fees, net per sale, monthly cost and break-even sales volume with editable rates.
Reorder Point & Safety Stock Calculator
Calculate reorder point from daily demand, lead time and safety stock (fixed buffer days or z x demand deviation x sqrt of lead time), with days of…
Sell-Through Rate Calculator
Calculate sell-through rate three ways (sold / beginning, sold / (sold + ending), sold / average inventory), plus projected days to clear and units…
Workers' Comp Premium & Audit Calculator
Estimate workers' compensation premium from payroll and your policy's rates per $100, then reconcile estimated against audited payroll to see the…
Working Capital, Current Ratio & Quick Ratio Calculator
Calculate working capital, current ratio and quick ratio from your balance sheet items, with a lender-ready printout. Free, private, runs in your…
Baluster Spacing Calculator
Baluster count, exact equal gap and station marks in 1/16 inch for deck and stair rails. Set your own maximum gap, mix bay lengths, or use stair rake…
Baseboard Trim Cut List Optimizer
Enter your wall lengths and stock lengths, get how many baseboards to buy, a per-board cut list and leftovers. Real bin packing with saw kerf and…
Brick Arch Calculator: Segmental Arch Radius
Brick arch calculator: enter span and rise to get the segmental arch radius, arc angle, voussoir count with tapered joints, and cut angle per joint…
Brick Bond Pattern Waste Guide: Running, Flemish, English
Compare brick counts for running, stack, common, English and Flemish bond using BIA Technical Note 10 correction factors, with a cutting-waste input…
Brick Pallet Coverage Calculator: Wall Area & Pallets
Brick pallet coverage calculator: enter wall area, brick type and bricks per pallet to get pallets to order, wall area per pallet and leftover…
Cabinet Door Size & Overlay Calculator
Cabinet door size calculator for overlay and inset doors, single or pairs, face-frame or frameless. Fractional-inch door sizes, a cut list, and a…
Epoxy Coverage Calculator: Floors & Pours
Epoxy coverage calculator for floor coats, flood coats and deep pours: gallons or litres, waste, kit ratio and whole kits. Data-sheet override.
Firebrick Lining Calculator for Fireplaces & Ovens
Firebrick lining calculator: split firebricks (9 x 4-1/2 x 1-1/4 in) for the back, sides and floor of a fireplace or pizza oven, plus refractory…
French Drain Planner: Gravel, Fabric & Slope
Plan French drain fall, changing trench depth, gravel, pipe lengths, couplers, filter fabric and spoil with transparent U.S. formulas.
Gutter & Downspout Flow Calculator (gpm)
Estimate roof runoff in gpm from roof area, pitch and rainfall intensity, then compare downspout counts with the capacity you enter. Flow and load…
Lot Coverage & FAR Calculator
Free lot coverage and floor area ratio calculator: enter lot area, your local limits and existing and proposed areas to see FAR and remaining room.
Pressure Washer Nozzle Size Calculator
Find the pressure washer nozzle size for your GPM and PSI, see the pressure at the two nearest standard sizes, or work out the GPM or PSI a nozzle…
Shelf Sag Calculator
Free shelf sag calculator: how much will my shelf bend? Deflection in inches and L/ratio from span, depth, thickness, wood modulus of elasticity and…
Sump Pump Size & Cycle Calculator
What size sump pump? Turn a basin fill test into inflow GPM, required GPM, cycle volume and cycles per hour, then compare a pump's flow at your head.
Board and Batten Spacing Calculator
Find equal board-and-batten panel widths for any wall, with exact batten marks from the corner in 1/16 inch. Multiple walls, no uploads.
Wall Framing Takeoff Calculator
Estimate common, king, jack and cripple studs, plates and sheathing for a U.S. wall with doors and windows. Transparent formulas, no uploads.
Well Pressure Tank Sizing Calculator
Size a well pressure tank: pump GPM and run time give the drawdown you need, the acceptance factor from your pressure switch gives total tank volume…
Credit Utilization Calculator
Free credit utilization calculator: balance divided by limit for each card and overall, the payoff needed to reach a target percentage, and how a…
Lawn Seed PLS & Bag Calculator
Work out how many bags of grass seed to buy from lawn area, pure live seed (purity x germination) and a label or extension seeding rate.
Rain Garden Size Calculator
Size a rain garden from catchment area, design storm, runoff coefficient and storage depth. Get surface area, excavation, media and mulch volumes and…
Rainwater Roof Yield Calculator
Estimate how much rainwater a roof yields: footprint area x rainfall x collection coefficient, less first-flush loss per rain event. Metric or US…
Canada CPI Inflation Calculator | Purchasing Power 1995-2026
Free Canada CPI inflation calculator using real Statistics Canada Consumer Price Index data (1995 to Aug 2026). See what your dollars are worth today…
CDIC Coverage Calculator: Is Your Money Insured?
Free CDIC coverage calculator. Enter balances per bank and account type to see what is insured up to $100,000 per category and what is uninsured…
Flight Carbon Footprint Calculator (kg CO2e per Passenger, DESNZ 2026)
Pick two airports and get kg CO2e per passenger for one way or round trip, by cabin class, with or without radiative forcing, using UK DESNZ 2026…
Foreign Transaction Fee Calculator (Canadian Credit Cards)
Enter a US-dollar purchase and your card's foreign transaction fee to see the fee in CAD, your effective exchange rate, and which of two cards costs…
Grade-Adjusted Pace Calculator (Minetti)
Free grade-adjusted pace calculator from the Minetti 2002 running cost model. Convert a hilly pace to flat-equivalent, in min/km or min/mi.
APY to APR Converter (and APR to APY)
Convert APY to APR or APR to APY for daily, monthly, quarterly or continuous compounding. Shows the formula, a worked CD example and the Reg DD…
Investment Payout Calculator
Free investment payout calculator. Enter a balance, your expected return, a withdrawal amount or percent and optional inflation indexing to see when…
Rule of 72 Calculator
Free Rule of 72 calculator. Years to double an investment, the exact answer next to the 69.3, 70 and 72 shortcuts, the rate needed to double in N…
Business Line of Credit Calculator: Fees & All-In Cost
Business line of credit calculator with draw fees, unused-line (standby) fees, draw timing and seasonal repayment. See total cost and the all-in rate…
Home Equity Loan Closing Cost Calculator
Add up appraisal, legal, title, lender and discharge fees, see the effective rate over your years, and the break-even vs a no-cost loan.
Home Equity Loan vs HELOC Calculator
Free calculator comparing a fixed-rate home equity loan with an interest-only-then-repayment HELOC: monthly and peak payment, total interest, your…
Line of Credit Payoff Calculator with Draws
Line of credit payoff calculator that handles new draws. See the payoff month, total interest and a month-by-month schedule you can download as CSV.
Line of Credit & HELOC Rate Stress Test
Stress test a variable-rate line of credit or HELOC: enter balance, margin and your own index steps to see payment shock and annual interest per…
Line of Credit vs Personal Loan Calculator
Compare a line of credit and a personal loan for the same amount: monthly payment, total interest, total cost, payoff time and APR with fees. Free.
Payday Loan Cost and APR Calculator (Canada)
Free Canada payday loan cost calculator: enter the amount and days to repay to see the fee, total repayment and the annual percentage rate, and how…
Available Home Equity Calculator: Borrowing Limit | TNAADO
Estimate how much home equity you can borrow: value times your lender's max CLTV minus existing liens. Shows equity, equity % and CLTV after.
CLTV Calculator: Combined Loan-to-Value & HCLTV | TNAADO
Free CLTV calculator. Add your first mortgage, second liens and HELOCs to see LTV, CLTV and HELOC-inclusive HCLTV, per Fannie Mae Selling Guide…
Down Payment Calculator Canada 2026
Free Canada minimum down payment calculator: 5% of the first $500,000, 10% of the portion up to $1.5 million, 20% at $1.5 million or more. See the…
Mortgage Renewal Payment Shock Calculator (Canada)
Free Canadian mortgage renewal payment shock calculator. Enter your balance, old and new rate to see the new monthly payment, the annual cost…
Nominal to Effective Annual Rate Calculator (Semi-Annual Mortgage Compounding)
Free nominal to effective annual rate converter for Canadian mortgages compounded semi-annually. Get the EAR, the monthly-equivalent rate and the…
Pay Period Calendar Generator 2026-2027
Free pay period calendar: weekly, biweekly, semi-monthly or monthly pay dates for 2026 or 2027, holiday shifts, 27-pay-period years flagged, .ics/CSV…
Salary Percentile Calculator (U.S.)
See what percentile your salary falls at for 150 U.S. occupations, estimated from BLS May 2025 wage percentiles.
Cycling Watts per Kg Calculator: Climb Speed
Calculate cycling W/kg from power and body mass, then estimate steady climbing speed from gravity, rolling resistance and drag with editable…
Belgian National Number Validator (Rijksregister) | TNAADO
Free Belgian national number checker. Verifies the 11-digit format and mod-97 check digits and reads century and sex. Format and checksum only.
Canada Import Landed Cost Calculator (Duty + GST)
Free Canada landed-cost calculator for commercial imports: value for duty, your duty rate, surtax, 5% GST on value plus duty, brokerage, freight, and…
CAS Registry Number Validator
Free CAS Registry Number (CAS RN) validator. Checks the 2-7 digit, 2 digit, check digit format and recomputes the check digit, with the working…
Copyright Duration Canada: Public Domain Date
Free Canada copyright duration calculator. Enter the author's death year to see when a work enters the public domain: life plus 70 years, s. 6.
DOI Checker & Validator
Free DOI checker and validator. Checks the syntax of a Digital Object Identifier against the Crossref-recommended pattern and the DOI Handbook…
EIC Code Validator: Energy Identification Code | TNAADO
Free EIC checker for European electricity and gas codes. Verifies the 16-character format, object type and ENTSO-E mod-37 check. Format and checksum…
GS1 Application Identifier Lookup and Parser
Free GS1 Application Identifier lookup and parser. Look up an AI such as 01, 10, 17, 21, 310n, 37, 00 or 414, or paste a GS1-128 / DataMatrix element…
Hull Identification Number Validator
Free hull identification number (HIN) validator. Checks a 12-character boat HIN against 33 CFR 181.25 and labels each field. Format only; runs in…
ISAN Number Validator
Free ISAN number validator. Checks the format and both ISO 7064 MOD 37,36 check characters of an International Standard Audiovisual Number (ISO…
ISNI Validator & Check Character Calculator
Free ISNI validator. Checks the 16-character format and ISO/IEC 7064 MOD 11-2 check character (ISO 27729), or computes it. Runs in your browser.
ISWC Validator & Check Digit Calculator
Free ISWC validator and check digit calculator. Checks the format and ISO 15707 check digit of an International Standard Musical Work Code…
Ontario Works Payment Dates 2026
Ontario Works payment dates for each 2026 benefit month, from the ontario.ca published schedule, plus how weekends and holidays move the payment date.
Patent Expiry Calculator Canada: 20-Year Term
Free Canadian patent expiry calculator. Enter the filing date and get the 20-year expiry date under Patent Act s.44, with a reminder that maintenance…
Patent Kind Code Lookup
Free patent kind code lookup. Enter A1, B2, S, E or a full number like US 10,123,456 B2 to get the plain-English meaning from the USPTO kind-code…
Plus Code Converter: Lat Long to Plus Code
Free Plus Code converter. Turn an Open Location Code into latitude and longitude and back, or recover a short code. Checked against Google's test…
ROE Deadline Calculator: Record of Employment
Free ROE deadline calculator: the last day an employer can issue a Record of Employment, paper or electronic, under s. 19 of the EI Regulations.
ROR ID Validator & Checksum Checker
Free ROR ID validator. Normalizes a ror.org URL or bare ID and checks the format and ISO/IEC 7064 MOD 97-10 checksum, reporting each failed part…
Taiwan Unified Business Number Checker 統一編號檢查
Free 統一編號 檢查 tool. Checks the 8-digit Taiwan unified business number (UBN) checksum under the current divisible-by-5 rule and the legacy…
Canada Trademark Renewal Calculator
Enter a Canadian trademark registration date to see its 10-year expiry and the renewal window under s.46 of the Trademarks Act. Date arithmetic only…
Medicare MBI Format Checker
Free Medicare Beneficiary Identifier (MBI) format checker. Tests the 11-character pattern (no S, L, O, I, B, Z). Format only, not enrollment.
Booklet Page Count & Imposition Planner
Round a booklet to a multiple of 4, count sheets and blank pages, and list the saddle-stitch imposition order or 16/32-page signatures. Runs locally.
eBay Title & Subtitle Checker
Check an eBay listing title (80 characters) and subtitle (55 characters) with live counters, a mobile-width truncation preview, and repeated-word and…
Etsy Image Size Checker
Batch-check Etsy listing photos for format, pixel size, the 635 px first-photo minimum, transparency, file size, and crop-safe centre. Runs locally…
Etsy Listing Video Size & Length Checker
Check an Etsy listing video’s format, file size, duration, resolution, and aspect ratio locally in your browser. No upload or Etsy login.
Etsy Title & 13-Tag Checker
Check an Etsy listing title and up to 13 tags for character limits, word count, duplicates, punctuation, and unused slots. Browser-only and no login.
Google Merchant Feed Validator (TSV & CSV)
Free Google Merchant Center feed checker. Check required attributes, availability, price format, title length, duplicate ids and GTIN check digits…
Google Merchant Image Requirements Checker
Batch-check local product images against Google Merchant Center limits: pixels, megapixels, file size, format, animation, and transparency, plus the…
Podcast Chapters JSON Generator
Build a valid Podcasting 2.0 chapters JSON file (version 1.2.0) from timestamps, titles, links and images, then copy the podcast:chapters feed tag.
Podcast Cover Art Size Checker
Check a local image against Apple Podcasts artwork rules: square, 1400–3000 px show art, 3000 × 3000 episode art, JPG or PNG, no alpha channel…
Podcast RSS Feed Validator: Apple Preflight
Free podcast RSS feed validator. Check well-formedness with line numbers, RSS 2.0 and iTunes tags, enclosures, GUIDs, dates and artwork in your…
Shopify CSV Validator: Product Import Check
Free Shopify product CSV validator. Check headers, UTF-8, handles, variant options, status, images, price and inventory before import. Runs in your…
YouTube Chapter Validator: Timestamp Checker
Paste YouTube chapter timestamps, normalise them and check the rules: start at 00:00, at least three chapters, ascending order, 10 seconds minimum.
Chinese Lunar to Gregorian Converter
Convert Chinese lunar dates (including leap months) to Gregorian and back for 1901-2100, look up Lunar New Year and Mid-Autumn dates, and find the…
Easter Date Calculator
Find the date of Easter for any year from 1583 to 4099, plus Ash Wednesday, Good Friday, Easter Monday, Ascension and Pentecost. Western and Orthodox…
Hebrew Date Converter — Gregorian to Hebrew
Convert Gregorian dates to Hebrew calendar dates and back. Shows the weekday, Adar I and Adar II in leap years, and an after-sunset option. Private…
Hijri to Gregorian Converter — Umm al-Qura
Convert Hijri (Islamic) dates to Gregorian and back using the Umm al-Qura or Islamic civil calendar. Shows month names and weekday. Runs privately in…
IANA to Windows Time Zone Converter
Convert IANA time zone IDs like America/Toronto to Windows time zone names like Eastern Standard Time, and back. Uses the Unicode CLDR mapping with…
ISO Week Number Calculator & Week Date Converter | TNAADO
Free ISO week number calculator. Turn any date into its ISO 8601 week date (e.g. 2026-W40-4) or back, and compare ISO vs US week numbers. In your…
Julian Date Converter: Julian Day Number
Convert a calendar date and UT time to Julian Date, Julian Day Number, Modified Julian Date and day of year, or back. Gregorian and Julian calendars.
Binary Calculator: Add, Subtract, Multiply, Divide | TNAADO
Binary calculator for add, subtract, multiply and divide. Shows carries, borrows, partial products and long division, with optional bit width and…
Binary Fraction Converter: Decimal to Binary
Free binary fraction converter: decimal to binary with repeating bits detected exactly, and binary back to decimal. Shows why 0.1 repeats. In your…
Bitwise Calculator (AND, OR, XOR, NOT, Shift)
Bitwise calculator: AND, OR, XOR, NOT, left shift, arithmetic and logical right shift on 8, 16, 32 or 64-bit values. Decimal, hex, binary or octal…
DMS to Decimal Degrees Converter & Validator
Free DMS to decimal degrees converter and lat/long validator. Converts 43°38'33.2"N style coordinates both ways, plus decimal minutes, with range…
Gray Code Converter
Convert binary to Gray code and Gray code to binary (up to 64 bits) with the XOR working shown, plus an n-bit reflected Gray table (1 to 8 bits)…
IEEE 754 Float Converter: Float to Binary & Hex | TNAADO
Free IEEE 754 converter: decimal to float32 or float64 binary and hex, with sign, exponent, mantissa, subnormals, NaN, Infinity and a 0.1 + 0.2…
Two's Complement Calculator
Convert decimal to two's complement binary and hex (4, 8, 16, 32, 64-bit), decode binary to signed decimal, and add or subtract with an overflow…
CSS Specificity Calculator
Free CSS specificity calculator. Paste one or many selectors, get the (A,B,C) specificity of each, sorted so the winner is on top, with ties settled…
Unused CSS Selector Checker
Free unused CSS checker. Paste your HTML and CSS to find selectors that match nothing, with an estimate of the bytes you could remove. Hover, focus…
GraphQL Formatter & Minifier
Free online GraphQL formatter and minifier. Pretty-print queries, mutations, fragments and SDL with Prettier, or minify them, with line and column…
SQL Formatter & Minifier
Free SQL formatter and minifier. Beautify or minify SQL for standard SQL, PostgreSQL, MySQL and SQLite with keyword case, indent and comma position…
TypeScript & TSX Formatter (Prettier, Online)
Free TypeScript and TSX formatter that runs in your browser using Prettier: set indent, semicolons, single or double quotes and print width. Your…
XML Formatter & Beautifier: Pretty Print XML
Free XML formatter and beautifier. Pretty-print XML with 2 or 4 spaces or tabs, keeping attribute order, CDATA and comments. Parse errors by line and…
CRC-16 Calculator: Modbus, CCITT, XMODEM & More | TNAADO
Free CRC-16 calculator with 8 variants: MODBUS, CCITT-FALSE, XMODEM, KERMIT, ARC, USB, X-25 and GENIBUS. Text or hex input, verified against check…
CSS Grid Generator
Free visual CSS Grid generator. Set rows, columns, gap and item spans, then copy the HTML, CSS or Tailwind classes. Live preview, runs in your…
JSON to JSON Schema Generator
Generate a JSON Schema (draft 2020-12) from sample JSON online. Paste one or many samples: infers types, required properties, string formats…
Locale Number & Date Format Tester (Intl)
Compare number, currency, unit, date, plural and relative-time formatting for up to six locales side by side using the browser Intl API, with…
SVG Optimizer (SVGO)
Free SVG optimizer that runs in your browser with SVGO 4. Toggle metadata removal, number precision and viewBox, see before and after bytes and a…
Unicode Confusable & Homograph Detector
Free Unicode confusable and homograph detector. Flag mixed-script text, see the UTS #39 skeleton of any string, and compare two strings for…
Geohash Encoder & Decoder
Free geohash decoder and encoder. Decode a geohash to its bounding box and centre, encode latitude and longitude at precision 1 to 12, see the…
HTTP Status Codes Lookup
Searchable table of every registered HTTP status code with class, plain-English meaning, cacheable-by-default flag, retry and redirect behaviour, and…
JSONPath Tester (RFC 9535)
Test JSONPath queries against your JSON in the browser. RFC 9535 syntax with filters, slices and recursive descent, and normalized paths for every…
BCP 47 Language Tag Checker
Free BCP 47 language tag checker. Test whether en-CA, zh-Hant-TW or any tag is well-formed under RFC 5646, see each subtag labelled, and get the…
BOLT11 Lightning Invoice Decoder
Free BOLT11 decoder and Lightning invoice decoder. Read the network, amount, timestamp, expiry, payment hash, description, route hints and feature…
CAA Record Checker & Generator
Free CAA record checker and generator. Paste zone-file CAA lines to check flags, tags, issue and issuewild values and iodef URLs against RFC 8659, or…
CSS Variables Checker: Unused & Undefined
Free CSS custom property auditor. Find unused variables, var() references with no definition, redefined names and circular dependencies. Nothing…
CSV Validator: Check RFC 4180 Structure
Free CSV validator. Check ragged rows, unclosed quotes, delimiter, BOM and encoding, duplicate or blank headers and column types. Runs in your…
DKIM Key Record Validator
Free DKIM record checker. Paste a selector._domainkey TXT record and check the v, h, k, n, p, s and t tags against RFC 6376, decode the public key…
DMARC Record Validator
Free DMARC record checker. Paste a DMARC TXT record and validate the v, p, sp, rua, ruf, pct, adkim, aspf, fo, ri and rf tags against RFC 7489, with…
JSON Schema Validator
Validate a JSON document against a JSON Schema (draft-07, 2019-09 or 2020-12) in your browser. Lists every error as instance path, failed keyword…
Markdown Linter: markdownlint Rules in Your Browser
Free online Markdown linter. Check heading increments, trailing spaces, hard tabs, duplicate headings, line length, blank lines around lists and…
OpenAPI Validator (3.0 & 3.1)
Free OpenAPI validator. Paste an OpenAPI 3.0 or 3.1 document in JSON or YAML and check it against the official OpenAPI Initiative JSON Schema. Get…
SPF Record Syntax Checker (RFC 7208)
Free SPF record syntax checker. Check an SPF TXT record against the RFC 7208 grammar and count DNS-querying terms against the limit of 10. No DNS…
UUID Validator & Version Checker (v1 to v8)
Free UUID validator. Check the 8-4-4-4-12 format, decode version and variant, spot Nil and Max UUIDs, and read v1, v6 and v7 timestamps per RFC 9562.
Web App Manifest Checker (manifest.json)
Free web app manifest checker. Paste manifest.json and check types, display, orientation, colours, icon sizes, start_url and scope against the W3C…
XML Validator: Well-Formedness Check & Formatter | TNAADO
Free XML validator and formatter. Check well-formedness with line and column errors, pretty-print, minify or convert to JSON. No XSD or DTD…
YAML Validator & Formatter: Line Errors
Free online YAML validator and formatter. Get line and column errors, multi-document support, a tabs-as-indent warning, re-format and YAML to JSON.
BC Final Pay Deadline Calculator (ESA s.17-18) | TNAADO
When final wages are due in BC: 48 hours after the employer ends employment, 6 days after an employee quits (ESA s.18), or 8 days after a pay period…
Ontario Meal Break Calculator (ESA 30 Minutes) | TNAADO
Enter a shift start and end to see the 30-minute eating periods Ontario's Employment Standards Act requires, the latest start of each, and paid hours.
Base32 Encode & Decode: RFC 4648 & Crockford
Free Base32 encoder and decoder: RFC 4648, base32hex and Crockford with optional check symbol, padding toggle, text or hex input. Nothing is sent.
Data URI Generator & Decoder
Free data URI generator and decoder. Turn a file or text into a data: URI (Base64 or percent-encoded), or decode one with MIME sniffing, preview and…
Punycode & IDN Converter
Free Punycode and IDN converter. Turn a Unicode domain into its xn-- form and back, label by label (RFC 3492), with a mixed-script homograph warning…
Cocktail ABV & Dilution Calculator
Work out a cocktail's pre-dilution ABV, final ABV after shaking or stirring dilution, final volume and US and Canadian standard drinks.
ENERGY STAR Certified Lookup
Search the official ENERGY STAR Model Index by brand or model number to check certification status, certification date, markets and Most Efficient…
EV Home Charger Payback Calculator
See how many months a home EV charger takes to pay back, and your yearly saving versus a gas car, using your own tariff, efficiency, distance and…
Heat Pump Savings Calculator
Compare annual heating cost for your current system against a heat pump using HSPF2 or COP, your own fuel and electricity prices, and install cost…
Room AC BTU Sizing Calculator
Size a room air conditioner from floor area using ENERGY STAR's capacity chart, with its sun, occupant and kitchen adjustments shown line by line…
Solar Panel Annual Yield Calculator
Estimate annual solar kWh from system size in kW, peak sun hours per day and system losses. Shows the formula, a worked example and PVWatts defaults.
USCIS Receipt Number Format Checker
Check whether a USCIS receipt number (IOE, SRC, EAC, WAC, LIN...) has the right format: 3 letters then 10 digits. Format check only, not case status.
Entity Legal Form (ELF) Code Lookup
Free ISO 20275 entity legal form (ELF) code lookup. Search the GLEIF ELF code list v1.6 (19 Feb 2026) by 4-character code, country, legal-form name…
ISO 4217 Currency Code Lookup & Decimal Places | TNAADO
Free ISO 4217 currency code lookup. Search by alpha or numeric code, country or currency name and see minor units. Copy of SIX List One, 2026-09-17.
Maidenhead Locator Converter
Free Maidenhead locator converter. Turn a 2, 4, 6 or 8 character grid square (like FN31pr) into latitude and longitude, convert coordinates back to a…
OS Grid Reference Converter
Free OS grid reference converter. Turn an Ordnance Survey National Grid reference (like NN 166 712) or easting and northing into WGS84 latitude and…
UTM to Lat/Long Converter (WGS84)
Free UTM to latitude/longitude converter and back, on WGS84. Enter zone, band letter or hemisphere, easting and northing, or decimal degrees. Karney…
US Patent Maintenance Fee Due Dates
Free US patent maintenance fee due date calculator. Enter the grant date and get the 3.5, 7.5 and 11.5-year windows, surcharge grace periods and days…
AS Number Range Classifier & asdot Converter
Free AS number range classifier and asdot to asplain converter. Check whether an ASN is private use, documentation, AS_TRANS or reserved, and convert…
Is This IP Private or Public? IP Type Checker
Paste an IPv4 or IPv6 address to see if it is private, public, CGNAT, loopback, link-local, documentation or multicast, with the IANA range table.
IPv4 Header Checksum Calculator
Free IPv4 header checksum calculator. Paste the header as hex or enter the fields to get the word-by-word one's complement sum, folded carries, the…
IPv6 Address Validator, Compress and Expand
Free IPv6 address validator: check an address, compress or expand it to the RFC 5952 canonical form, and see its type. Runs in your browser.
IPv6 ULA Prefix Generator (RFC 4193)
Free IPv6 ULA generator: make a random fd00::/8 unique local /48 prefix with the RFC 4193 SHA-1 method, plus its first /64 subnets. Runs in your…
MAC Address Validator & Format Converter
Free MAC address validator and converter. Check colon, hyphen, Cisco dotted or bare hex (EUI-48, EUI-64), convert formats and decode the I/G and U/L…
Reverse DNS PTR Name Generator
Free reverse DNS name generator. Turn an IPv4 or IPv6 address into its in-addr.arpa or ip6.arpa PTR name, get the delegation zone for a CIDR block…
Cache-Control Analyzer
Free Cache-Control header checker. Paste Cache-Control (plus optional Age, Date, Expires, ETag, Vary) for a plain-English breakdown of max-age…
CORS Preflight Checker & Tester
Test a CORS request without sending it. Enter origin, method, headers and credentials, paste the response headers, and see which Fetch Standard check…
PGP Key Fingerprint Calculator
Free PGP key fingerprint calculator. Paste an ASCII-armored public key to get the GPG fingerprint, key ID, algorithm, creation date and user IDs…
Security Headers Analyzer
Paste HTTP response headers and check CSP, HSTS, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, COOP/CORP, X-Frame-Options and cookie…
Set-Cookie Inspector & Attribute Checker
Paste Set-Cookie headers and see each cookie's name, Domain, Path, expiry, Secure, HttpOnly and SameSite, with flags for SameSite=None without…
Heading Anchor Generator: GitHub Slugs & HTML IDs | TNAADO
Paste headings and get collision-safe anchor slugs with -1, -2 suffixes: GitHub-style (github-slugger) or plain HTML ids, plus link and Markdown…
Heading Outline Diff: Compare H1-H6 Structure
Paste old and new HTML and compare their H1-H6 outlines. See added, removed, moved and level-changed headings, H1 count changes and skipped levels…
HTML Head Diff Checker: Compare Staging vs Production
Paste the staging and production <head> and diff title, meta description, canonical, robots, hreflang, Open Graph, Twitter and JSON-LD. Flags noindex…
HTML Landmark Checker: ARIA Landmarks Outline
Paste HTML to list header, nav, main, aside, footer, section, form and search landmarks with their ARIA roles, and see missing main, duplicate or…
HTTP Link Header Parser (RFC 8288)
Parse an HTTP Link header per RFC 8288: split links, decode title* , list rel values, and flag missing rel, duplicate parameters, and relative URIs…
JSON-LD Validator: Check Structured Data
Paste JSON-LD and check JSON syntax, @context, @type and Google required properties for Article, Product, FAQPage, BreadcrumbList and Organization.
Next.js Metadata Previewer (generateMetadata to HTML head)
Paste a Next.js metadata export or generateMetadata object and see the HTML head tags it produces: title template, description, canonical, robots…
Robots.txt Tester — RFC 9309 Rule Matrix
Paste robots.txt and test crawler product tokens against one or many URL paths with RFC 9309 group selection, longest-match precedence, wildcards…
Table of Contents Generator (HTML & Markdown)
Free table of contents generator. Paste HTML or Markdown, pick heading levels, and get a nested ul/ol list with anchor links. Missing ids are added…
UTM Link Builder (Campaign URL Builder)
Free UTM link builder: add utm_source, utm_medium, utm_campaign, utm_term and utm_content to any URL, check lowercase and naming consistency, use…
Words to Pages Calculator: Font, Spacing & Margins
Convert words to pages, or pages to words, by font, size, line spacing, margins and paper size. Shows a range, not a rule. Runs in your browser.
XML Sitemap Validator — Local XML & XML.GZ
Validate a pasted or local XML sitemap or sitemap index for structure, namespace, URL, duplicate, host, date, enum, and size-limit issues without…
Master Carton Packout Calculator: Units per Carton | TNAADO
Test all six axis-aligned product orientations in a master carton. Get units per carton, arrangement, cube utilization, gross weight and leftover…
Packing List Generator | Free, No Signup
Build a packing list or packing slip: shipper, recipient, line items, cartons, total pieces, net and gross weight. Print to PDF, import or export…
Pallet Ti-Hi Calculator | Boxes per Pallet
Calculate boxes per pallet: ties (Ti), high (Hi), cases per pallet, pallets for an order quantity, loaded height and weight, with a layer diagram…
Poly Mailer Size Calculator: Minimum Bag Size
Find the minimum flat poly mailer width and length for a folded product from its size, thickness, quantity, flap and seal allowance, then compare…
Thermal Label Dots Calculator: mm, Inches & DPI | TNAADO
Convert thermal-label size between millimetres, inches and printer dots at 203, 300 or 600 DPI. See rounding error and optional printer command…
UPS Tracking Number Format Checker (1Z)
Free UPS tracking number format checker. Validates the 1Z format (shipper, service, package id) and its check digit. Cannot confirm a shipment exists…
U.S. Commercial Invoice Completeness Checker
Free U.S. commercial invoice completeness checker. Flags fields missing against 19 CFR 141.86 (port of entry, parties, description, quantity, price…
Lexical Diversity Calculator: TTR & MATTR
Calculate TTR, MATTR, Guiraud R and Herdan C from pasted text. See each formula and its limits; your text stays in your browser.
Sentence Length Analyzer: Words per Sentence
Calculate average, median, 90th percentile and longest sentence length in words. See a histogram instantly; your text stays in your browser.
Import De Minimis Threshold Checker
Check whether a low-value import is exempt from duty in the US, UK, Canada or the EU. Each rule cites a government page and an as-of date…
Buy-to-Let Tax Calculator UK 2026-27 (Section 24)
Estimate UK buy-to-let Income Tax with Section 24 finance cost relief: 20% basic-rate reduction, carried-forward mortgage interest and the 1,000…
UK Capital Gains Tax Calculator 2026-27
Estimate UK Capital Gains Tax for 2026-27 on shares, funds or a second property: £3,000 annual exempt amount, 18% and 24% rates, optional Business…
UK Child Benefit Tax Charge Calculator
Estimate the UK High Income Child Benefit Charge for 2026-27: 1% per 200 over 60,000, fully repaid at 80,000, and how pension contributions cut it.
UK Company Filing Deadline Checker
Work out your UK limited company's deadlines: annual accounts, confirmation statement, Corporation Tax payment and return, with late-filing penalty…
UK Dividend Tax Calculator 2026/27
Work out UK dividend tax for 2026/27: £500 allowance, 10.75%, 35.75% and 39.35% rates, stacked on top of your other income. Free, private, as of 30…
UK Holiday Entitlement Calculator
Work out UK statutory holiday entitlement: 5.6 weeks capped at 28 days, part-time, part-year and the 12.07% method for irregular hours. Printable…
UK Inheritance Tax Calculator 2026-27
Estimate UK Inheritance Tax: £325,000 nil-rate band, £175,000 residence nil-rate band with the £2 million taper, spouse transfer, and the 36% charity…
Wales Land Transaction Tax (LTT) Calculator 2026
Free Wales Land Transaction Tax (LTT) calculator for residential purchases: main rates and higher rates for additional dwellings, with a worked…
Scotland LBTT Calculator 2026
Free Scotland LBTT calculator for residential purchases: standard bands, first-time buyer relief (£175,000 nil band) and the 8% Additional Dwelling…
UK Limited Company Take-Home Calculator 2026-27
Compare director salary vs dividends for a UK limited company in 2026-27: Corporation Tax with marginal relief, employer NI, Employment Allowance…
UK Pension Lump Sum Tax Calculator 2026-27
Estimate the tax-free 25% and the Income Tax on a UK pension withdrawal, capped by the £268,275 Lump Sum Allowance. England, Wales and Northern…
UK SIPP Tax Relief Calculator
Estimate UK pension tax relief on a SIPP or personal pension: 20% added at source, extra 20% or 25% to claim via Self Assessment, the 100% of…
UK Sole Trader Tax Calculator 2026-27
Estimate Income Tax and Class 4 National Insurance for a UK sole trader in 2026-27 from turnover and expenses, with Class 2 status and the £1,000…
UK Student Loan Repayment Calculator 2026-27
Work out monthly and annual UK student loan repayments from gross salary for Plan 1, 2, 4, 5, postgraduate and multiple loans, using 2026-27 GOV.UK…
Car Loan Interest Deduction Calculator 2025-28 | TNAADO
Estimate the new federal car loan interest deduction: $10,000 cap, $200 phase-out per $1,000 of MAGI over $100,000 ($200,000 joint), plus eligibility…
Colorado Business Entity Lookup
Search the Colorado Secretary of State business entity records by name or ID. See status, type, jurisdiction and formation date. Public-data match…
County FIPS Code Lookup: U.S. Counties & States | TNAADO
Search U.S. county FIPS codes by county name, state or 5-digit code. Free lookup of 3,235 counties and state codes from the 2020 Census file, in your…
EPA ECHO Facility Compliance Lookup
Look up a U.S. facility in EPA ECHO: compliance status, last inspection, enforcement history and program status, with plain-language limits for due…
EPA Safer Choice Product Lookup
Search EPA's Safer Choice and Design for the Environment certified-product list by brand, product or category, with a link to each official EPA…
FAA Airport Identifier Lookup: LID, ICAO, Runways | TNAADO
Search 4,858 U.S. public-use airports by FAA identifier, ICAO code, name or city. See elevation, tower status and runway lengths (FAA NASR, 3 Sept…
FDIC Bank Lookup: Cert Number & Insured Status | TNAADO
Look up a U.S. bank by name or FDIC certificate number. See active or inactive status, city, state and when deposit insurance began, from FDIC…
Federal Poverty Level Calculator 2026 (FPL)
Look up 2026 HHS federal poverty guidelines by household size and state group, and calculate 100%, 133%, 138%, 150%, 200%, 250% or 400% of FPL.
FAFSA School Code Lookup 2025-26
Search the 2025-26 Federal School Code list by school name, city, state or code. Find the FAFSA code for 6,419 participating schools, free in your…
ITIN Format Validator: Check ITIN Pattern
Free ITIN format validator. Checks the 9-digit pattern: starts with 9, digits 4-5 in 50-65, 70-88, 90-92 or 94-99. A match does not prove issuance.
Mortgage Interest Deduction Calculator 2026
Estimate your 2026 mortgage interest deduction: $750,000 debt limit ($375,000 married filing separately), grandfathered debt, and a standard…
15 vs 30 Year Mortgage Calculator: Invest the Difference
Compare a 15-year and 30-year mortgage on the same loan: payment difference, total interest, and the break-even return on investing the difference.
2-1 Buydown Calculator (Also 3-2-1 and 1-0)
Calculate what a 2-1, 3-2-1 or 1-0 temporary buydown costs, your payment each year, and how it compares with permanent points or a seller credit.
ARM vs Fixed-Rate Mortgage Calculator (5/1, 7/1, 10/1)
Free ARM vs fixed calculator for 5/1, 7/1 and 10/1 loans: rate after each adjustment with your caps, cumulative cost at years 5, 7 and 10, and the…
Cash-Out Refinance Calculator: Payment & Break-Even | TNAADO
Free cash-out refinance calculator: cash received, new payment, total interest, months to recoup costs, and a first-mortgage-plus-HELOC comparison…
Commercial Mortgage Balloon Calculator
Calculate a commercial mortgage payment and balloon balance from separate loan-term and amortization periods, with optional interest-only months.
Commercial Real Estate DSCR Calculator
Calculate commercial real estate DSCR from property NOI and annual debt service, test loan terms, and compare rate and NOI stress scenarios.
Debt-to-Income Ratio Calculator (DTI)
Calculate front-end and back-end debt-to-income ratio for a mortgage, car loan or HELOC and compare it with Fannie Mae's 36%, 45% and 50% limits.
Escrow Shortage Calculator (Escrow Analysis)
Estimate your mortgage escrow shortage, 1/6 cushion and new monthly escrow payment from your tax and insurance bills, using the RESPA rules in 12 CFR…
FHA MIP Calculator: Upfront & Annual Premium
Estimate FHA upfront and annual mortgage insurance premium (MIP) by base loan, LTV, term and case number date from HUD's rate table, and how long MIP…
HELOC Payment Calculator: Draw vs Repayment
HELOC payment calculator: interest-only draw-period payment, repayment-period payment, the jump between them, payment at your lifetime rate cap, and…
How Much House Can I Afford? Calculator
Enter your salary to see how much house you can afford: max payment from front-end and back-end ratios, then price with down payment, tax, insurance…
APR Calculator with Fees: Mortgage, Auto, Loan | TNAADO
Estimate the APR of a loan from its note rate and fees using the Regulation Z actuarial method. Shows amount financed, finance charge and total of…
Mortgage Points Break-Even Calculator
Compare two Loan Estimate quotes: points cost, monthly P&I, break-even months and interest saved for discount points or lender credits.
Mortgage Recast Calculator
Compare a mortgage recast with keeping your old payment after a lump sum: new monthly payment, payoff time and interest saved.
USDA Loan Guarantee Fee Calculator
Estimate the USDA Section 502 upfront guarantee fee, the financed loan total and the monthly annual-fee add-on for year 1 and any later year.
VA Funding Fee Calculator
Estimate the VA home loan funding fee for purchase, cash-out refinance and IRRRL loans, with the loan amount if the fee is financed.
VA IRRRL Recoupment Calculator
Test a VA IRRRL against the 36-month recoupment rule, the 0.50 and 2.00 point rate tests and the 210-day seasoning date, with the funding fee…
NCUA Credit Union Lookup: Charter Number & Assets | TNAADO
Search 4,214 NCUA federally insured credit unions by name, city, state or charter number. See status, assets, members and net worth ratio from the…
Negative Equity Car Trade-In Calculator
Car payment calculator with negative equity trade-in: see the rolled-in shortfall, new payment, loan-to-price ratio and the extra interest it costs.
U.S. Paycheck Calculator 2026: Gross to Net
Estimate U.S. take-home pay for 2026: federal withholding (IRS Pub. 15-T), Social Security, Medicare, a state flat rate and pre-tax deductions.
College Accreditation Checker (DAPIP)
Search a U.S. college for its institutional accreditor and status from Department of Education DAPIP data, with a guide to what it means for aid and…
Pre-Tax Deduction Paycheck Impact 2026
See how a traditional 401(k), HSA or section 125 premium changes each paycheck: take-home change, tax saved and the cost of $100 contributed. 2026…
Property Tax Proration Calculator
Split a property tax bill between buyer and seller at closing using annual tax, a 360, 365 or 366-day basis, tax period dates and who owns the…
SBA 7(a) Guaranty Fee Calculator FY 2026
Estimate the SBA 7(a) upfront guaranty fee and lender annual service fee for FY 2026 loans by amount, term and guaranty percentage (Notice…
SBA Size Standards Lookup by NAICS Code
Search SBA small business size standards by NAICS code or industry. See the revenue or employee limit from 13 CFR 121.201 and check a business…
Seller Net Proceeds Calculator
Estimate net cash from a home sale after mortgage payoff, agent commissions and closing costs, and find the sale price needed for a target net.
Shift Differential Pay Calculator
Estimate weekly gross pay with shift differentials, the FLSA regular rate that includes them, and the overtime premium on hours over 40.
SSN Format Validator: Check SSN Pattern
Free SSN format validator. Check the 9-digit AAA-GG-SSSS pattern against SSA rules for areas 000, 666 and 900-999. Format only, cannot confirm…
Student Loan Interest Deduction Calculator 2025 | TNAADO
Estimate your 2025 federal student loan interest deduction (up to $2,500) and the tax it saves, with the MAGI phaseout applied step by step.
Superfund Site Status Lookup (NPL)
Search EPA Superfund National Priorities List sites by name, city or state. See whether a site is final, proposed or deleted, its EPA ID and a link…
Tip Credit and Overtime Calculator (US)
Work out a tipped employee's cash wage, FLSA tip credit used, overtime and any shortfall the employer must cover. State minimum wage is your input.
TRI Facility Lookup: Toxics Release Inventory Facilities
Search EPA Toxics Release Inventory (TRI) facilities by name, city or state. See each facility's TRIFID, address and parent company, with plain notes…
VA Combined Rating Calculator
Combine VA disability ratings with step-by-step working under 38 CFR 4.25 and 4.26, including rounding to the nearest 10 and the bilateral factor.
U.S. Vehicle Tools | TNAADO
U.S. car lease and vehicle cost calculators: lease money factor to APR, lease vs buy, mileage deduction and more.
Lease Money Factor to APR Calculator
Convert a car lease money factor to APR, calculate the monthly lease payment from cap cost, residual and term, and compare leasing vs buying.
NHTSA Complaints Lookup by Make, Model & Year
See how many consumer complaints NHTSA has on file for a make, model and year, by component, with crash, fire and injury counts. Unverified reports.
Added September 29, 2026 · 410 new tools
Age Pension Payment Dates 2026
View the Services Australia 2026 four-weekly Age Pension payment calendar, including issue, direct-deposit and cheque dates.
ANZSIC Code Lookup
Search the full ABS ANZSIC 2006 Revision 2.0 hierarchy by Australian industry code or title.
Australia Post Cubic Weight Calculator
Estimate Australia Post cubic weight and chargeable weight from parcel dimensions and actual weight. Uses the 250 kg per cubic metre formula.
Centrelink Payment Dates Planner 2026
Plan fortnightly Centrelink payment dates from your own confirmed payment date. Includes official Services Australia public-holiday limitations.
HELP / HECS Repayment Calculator 2026–27
Estimate compulsory HELP or HECS repayment for the Australian FY2026–27 marginal repayment schedule.
Medicare Levy Calculator Australia 2026–27
Estimate the Australian Medicare levy for a single taxpayer under FY2026–27 low-income thresholds.
Australian Postcode Validator & Lookup
Check the four-digit shape of an Australian postcode locally, then open Australia Post's official postcode finder for a suburb or address-level…
Super Guarantee Calculator Australia 2026-27
Estimate the Australian superannuation guarantee contribution at the FY2026–27 12% rate. Free, private and runs in your browser.
Australian Take-Home Pay Calculator 2026–27
Estimate Australian take-home pay for FY2026–27 with resident income tax, Medicare levy and optional HELP repayment.
Code 128 Barcode Generator
Create a Code 128 barcode for printable ASCII text, download it as SVG or PNG, and check the data rules before printing.
Code 39 Barcode Generator
Generate a Code 39 barcode for uppercase letters, digits and the standard Code 39 punctuation set, with browser-side validation and downloads.
EAN-13 Barcode Generator
Generate an EAN-13 barcode by calculating the GS1 check digit from 12 data digits, validate a complete code, and download SVG or PNG.
EAN-8 Barcode Generator
Generate an EAN-8 barcode from seven GS1 data digits with automatic check-digit calculation and SVG or PNG download.
ITF-14 Barcode Generator
Generate an ITF-14 logistics barcode from 13 data digits with automatic GS1 check digit calculation and SVG or PNG download.
Order Contribution Margin Calculator (Ecommerce) | TNAADO
Model ecommerce order contribution margin with your own discounts, product, fulfillment, payment, platform, shipping and ad costs. Free, no sign-up.
Fixed-Fee Freelance Calculator: Max Hours
Reverse-solve a fixed-fee freelance project: the maximum hours you can spend at your target margin, with expenses and a risk buffer included.
Freelance Project Quote Calculator
Build a freelance project quote from delivery hours, meetings, revisions, expenses and a transparent risk buffer. Compare margin and markup without…
Freelance Hourly Rate Calculator
Calculate the hourly rate you need to charge as a freelancer or contractor from your desired annual income, working weeks and hours, overhead, taxes…
Invoice Late Fee & Interest Calculator
Calculate interest and late fees owed on an overdue invoice. Includes Canada's Interest Act disclosure rule and the UK statutory late-payment rate…
Marketplace Break-Even Calculator: Price & Units | TNAADO
Find your marketplace break-even price and unit count from your own fixed costs, unit costs, per-order fee and fee percentage. Free and private.
Print-on-Demand Profit & Margin Calculator
Estimate print-on-demand profit and margin from selling price, product and fulfilment costs, shipping, ads, and editable fee rates.
Landed Cost & Retail Margin Calculator
Calculate per-unit landed cost, wholesale margin and retail contribution margin after discounts, fulfillment and payment fees. Free, no sign-up.
SaaS Metrics Calculator: MRR, LTV, CAC, Payback | TNAADO
Calculate SaaS MRR, ARR, ARPA, net revenue retention, LTV, CAC, LTV:CAC and CAC payback from your own operating inputs. Free and private.
Sales Commission Calculator
Free sales commission calculator. Enter a sale amount and commission rate, with an optional accelerator tier above a quota threshold, to compute…
Scope Creep Calculator | Change Order Price
Calculate the cost of scope creep from extra hours, meetings, revisions and expenses, then turn it into a transparent freelance change order.
Subscription Price Increase Churn Calculator
Model subscription price-increase scenarios with baseline churn, incremental churn, subscribers, and cumulative revenue over time.
Wholesale Markup & Keystone Calculator
Calculate wholesale price from unit cost and markup, then see the keystone retail price, gross margin, and order profit.
Concrete Block & Mortar Calculator
Estimate concrete masonry units, mortar volume, and mortar bags for a block wall with openings, waste, and metric or imperial dimensions.
Gravel & Aggregate Calculator
Calculate cubic yards and tons of gravel or crushed stone needed for a driveway, path, or paver base. Free gravel calculator with loose and compacted…
Insulation Calculator
Calculate how many insulation batts you need for walls or attics, plus recommended R-values by climate zone. Free batt calculator for 16" and 24"…
Mulch & Topsoil Calculator
Calculate how many cubic yards, cubic feet, or bags of mulch or topsoil you need for a garden bed or landscaping project at any depth. Free mulch…
Paver Base & Bedding Sand Calculator
Estimate compacted paver base aggregate, bedding sand, surface area, and indicative base weight in metric or imperial units.
Rafter Length & Roof Pitch Calculator
Free rafter length calculator: common and hip/valley rafter length from run, pitch (X:12, degrees or percent) and overhang, in feet/inches or metric.
Retaining Wall Drainage Stone Calculator
Estimate drainage-zone and base-layer stone volume and mass for a retaining wall in metric or imperial units, with waste and supplier density inputs.
Shed Roof Material Takeoff
Estimate shed roof area, decking sheets, covering packages, edge trim, and supplier-specified covering mass in metric or imperial units.
Stair Stringer Calculator
Calculate stair risers, treads, total run, stringer length, and a preliminary stringer count in metric or imperial units.
Tile & Grout Calculator
Estimate tile count, grout volume, grout bags, and thinset bags from room dimensions, tile size, joint, and waste.
Pressure Converter (psi, kPa, bar, atm)
Free pressure converter. Convert psi, kPa, bar, atm, mmHg, inHg, torr and MPa. Factors follow NIST SP 811. Handy for tire pressure, weather and HVAC.
Recipe Scaler
Free recipe scaler. Enter your ingredient list with the original serving count and the servings you need, and get every quantity recalculated…
SMD Resistor Code Calculator
Decode SMD resistor markings (3-digit, 4-digit, R notation and EIA-96) to ohms, or look up the code for a resistance. Runs in your browser.
Compost C:N Ratio Calculator
Blend two compost ingredients by editable weight and carbon-to-nitrogen ratios to estimate the finished pile's C:N ratio.
Garden Bed Soil & Plant Count Calculator
Estimate raised-bed soil volume and plant count from bed dimensions, plant spacing, row spacing and an editable buffer.
Irrigation Runtime & Water-Use Calculator
Estimate irrigation runtime and water use from area, target depth, measured flow, applications per week and delivery efficiency.
Irrigation Zone Flow Calculator
Add emitter or sprinkler flow, runtime and zones to estimate irrigation water use in gallons and litres.
Pond Volume, Liner & Pump Calculator
Estimate pond volume, a conservative liner footprint and pump flow for a chosen turnover time from simple pond dimensions.
Pool Chemical Dosage Calculator
Scale a pool product's own label dose to your pool volume. Label-first safety wording, metric and imperial volume support, no chemical…
Combined-Shape Pool Volume Calculator
Estimate pool volume by combining rectangular, circular, oval, triangular and trapezoidal sections with separate average depths.
Rainwater Tank Sizing Calculator
Estimate annual rainwater harvest and a starting tank size from roof area, rainfall, collection efficiency and dry-spell demand.
Seed Spacing & Plant Count Calculator
Estimate planting stations, seeds to sow and expected established plants from row length, seed spacing and reserve assumptions.
ACT Composite Score Calculator (No Science)
Free ACT composite score calculator: average English, math and reading, rounded to the nearest whole number as ACT has done since September 2025.
BMR Calculator
Free BMR calculator using the Mifflin-St Jeor equation. Calculate your basal metabolic rate (calories burned at rest) and see maintenance calories…
Calories Burned by Activity Calculator
Free calories-burned calculator using real published MET (Metabolic Equivalent) values from the Compendium of Physical Activities. Pick an activity…
Citation Generator (APA, MLA, Chicago)
Free citation generator for APA 7th edition, MLA 9th edition, and Chicago 17th edition (Notes-Bibliography and Author-Date). Enter a book, journal…
Class Rank Percentile Calculator
Free class rank percentile calculator. Enter your class rank and class size to get your percentile and top-percent standing.
EV vs Gas Break-Even Calculator
Free EV vs gas car break-even calculator. Enter the price gap, your driving, and fuel/electricity prices (defaults from NRCan and Hydro-Quebec data)…
Final Exam Grade Needed Calculator
Free calculator for what you need on your final exam to reach a target course grade. Enter your current grade and the final's weight, or list every…
5 Pin Bowling Score Calculator + Handicap
Free Canadian five-pin bowling scorer: enter each ball for the running score, strikes, spares, 10th frame and league handicap. C5PBA Rules 2023.
Fuel Cost Calculator
Free fuel cost calculator. Enter trip distance, vehicle fuel efficiency, and fuel price to get the real cost of a trip. Supports both L/100km and MPG…
Grade Percentage to Letter Grade Converter
Free grade percentage to letter grade converter. Enter a percentage to get the letter grade on the standard 10-point US scale or the Ontario Growing…
Humidex Calculator: Environment Canada Formula | TNAADO
Free humidex calculator using the Environment and Climate Change Canada formula. Enter temperature and dew point or humidity for the comfort category.
Jet Lag Calculator
Free jet lag calculator. Estimate recovery time after crossing time zones and get evidence-based tips for adjusting faster, based on sleep science.
Lean Body Mass Calculator
Free lean body mass (LBM) calculator using the Boer formula. Estimate fat-free mass from height and weight alone, no tape measure required.
Life Insurance Needs Calculator (DIME Method)
Free life insurance needs calculator using the DIME method (Debt, Income, Mortgage, Education). An educational estimate, not an insurance quote or…
Nether Portal Calculator: Minecraft Coordinates | TNAADO
Free Minecraft Nether portal calculator: divide Overworld X and Z by 8 or multiply Nether coordinates by 8, with Java and Bedrock linking ranges.
Minecraft XP Level Calculator
Free Minecraft XP level calculator: convert a level to total experience points, points to level, or find the XP needed between two levels, using the…
Moving Cost Estimator
Free moving cost estimator. Enter distance, home size, and hiring movers vs. DIY truck rental to get a typical cost RANGE, sourced from published…
Ontario TOU vs ULO vs Tiered Calculator
Free Ontario electricity plan comparison. Enter monthly kWh and when you use power to compare Time-of-Use, Ultra-Low Overnight and Tiered at OEB…
Party & Wedding Alcohol and Keg Calculator
Free party and wedding alcohol calculator. Work out standard drinks (Canadian 17.05 mL pure alcohol) and how many kegs, wine and spirits bottles to…
Dog & Cat Age Calculator
Free dog and cat age calculator using the real AVMA formula, not the outdated 'multiply by 7' myth. Convert dog years or cat years to human years…
Dog & Cat Daily Calorie Calculator
Free dog and cat daily calorie calculator. RER = 70 x kg^0.75 with the AAHA life-stage multipliers (neutered, intact, puppy, kitten, weight loss…
Pet Cost Calculator: Dog & Cat Yearly Costs
Free pet cost calculator for a dog or cat: first-year setup and annual costs for food, vet care, vaccines, supplies and insurance, from OVMA 2025…
Ring Size Converter
Free ring size converter between US/Canada, UK/Australia, and circumference or diameter in mm. Includes instructions for measuring your ring size at…
RSVP & Catering Headcount Calculator
Free RSVP and catering headcount calculator. Turn an invited guest count into an expected attendance range and a catering headcount using real…
Shoe Size Converter
Free shoe size converter between US, UK, and EU sizing, for men's and women's shoes. Enter any size in any system and convert instantly.
Study Schedule Planner
Free study schedule planner. Enter your exam date, topics, and available study days, and get a day-by-day study plan that spaces out and weights…
Tipping by Country
Free tipping-by-country reference. Look up restaurant tipping customs and etiquette for over 25 countries, with a suggested tip amount calculated…
Turkey Thaw & Roast Time Calculator
Free turkey calculator: what size to buy, fridge and cold-water thaw time (Health Canada and USDA), roast time by weight, and a work-back schedule…
VO2 Max Calculator
Free VO2 max calculator using the Heart Rate Ratio Method (Uth et al., 2004) — estimate your maximum oxygen uptake from resting and maximum heart…
Waist-to-Height Ratio Calculator
Free waist-to-height ratio (WHtR) calculator. Measure your waist and height to find your WHtR and NICE health-risk category — keep your waist below…
Waist-to-Hip Ratio Calculator
Free waist-to-hip ratio (WHR) calculator. Measure your waist and hip circumference to find your WHR and WHO health-risk category.
Weighted Grade Calculator
Free weighted grade calculator. Enter your assignment categories (homework, quizzes, exams) with their weights and your score in each to get your…
Wind Chill Calculator: Environment Canada Index | TNAADO
Free wind chill calculator using Environment Canada's official formula (not the US NWS one). Enter air temperature and wind speed for the index.
Corrected Age Calculator for Premature Babies
Free corrected age calculator for premature babies: subtract the weeks your baby was born early from their actual age, using the American Academy of…
Powerlifting Points: Wilks, DOTS & IPF GL
Free powerlifting points calculator. Enter bodyweight and total (kg or lb) to get Wilks, DOTS and IPF GL points from the published coefficients.
Race Time Predictor (Riegel Formula)
Free race time predictor using the Riegel formula, T2 = T1 x (D2/D1)^k. Predict 10K, half marathon and marathon times from a 5K, with a selectable…
CPP Start Age Break-Even: 60, 65 or 70
Free CPP start-age break-even calculator. Compare 60, 65 or 70: 0.6%/month reduction before 65, 0.7%/month increase after, and the payoff age.
GIC Calculator Canada: Maturity Value & Interest | TNAADO
Free Canadian GIC calculator. Enter principal, rate, term and compounding to project maturity value, plus CDIC coverage limits.
Home Buyers' Plan (HBP) Repayment Calculator
Free RRSP Home Buyers' Plan repayment schedule: first repayment year, minimum yearly repayment (1/15), and what happens if you repay extra or skip a…
OAS Clawback Calculator: Recovery Tax 2026
Free OAS recovery tax (clawback) calculator: 15% of net income above $93,454 (2025) or $95,323 (2026), capped at the OAS you received.
RRSP Withdrawal Withholding Tax Calculator
Free RRSP withdrawal withholding tax calculator. See the CRA withholding rate (10%, 20% or 30%; 5%, 10% or 15% in Quebec) and the cash you receive.
Criminal Interest Rate Checker: Canada 35% APR | TNAADO
Free Canada criminal interest rate checker: enter loan amount, payments and fees to get the APR and test it against the 35% limit in s.347. Not legal…
Drop Rate Calculator: Odds of At Least One Drop | TNAADO
Free drop rate calculator: the chance of at least one drop after n tries at any 1-in-N rate, and tries needed for 50%, 90%, 95% and 99%.
Blend and Extend Mortgage Calculator Canada
Free blend and extend mortgage calculator. See your blended rate, new payment and total interest vs staying put or breaking and renewing.
Ontario Condo Reserve Fund Projector
Free Ontario condo reserve fund projector. Build a 30-year cash-flow plan in the layout O. Reg. 48/01 requires, and see the special assessment risk…
Mortgage Trigger Rate Calculator (Variable Rate) | TNAADO
Free trigger rate calculator for variable-rate mortgages with fixed payments: the rate where payment stops covering interest, and trigger balance.
Ontario NRST Calculator: Speculation Tax
Free Ontario Non-Resident Speculation Tax (NRST) calculator: the flat 25% of full consideration, the 4-year rebate and exemptions, per ontario.ca.
Rental Yield & Cap Rate Calculator
Free rental property yield calculator. Work out gross yield, net yield and capitalization rate from purchase price, rent and operating expenses.
Beam Deflection Calculator
Calculate centre deflection, support reactions, and maximum bending moment for a simply supported beam with a centre point load.
Gear Ratio Calculator
Calculate gear ratio, output RPM, output torque, and ideal output power from driver and driven tooth counts.
Mach Number Calculator
Calculate Mach number from speed and air temperature, including local speed of sound and subsonic, transonic, supersonic, or hypersonic regime.
Reynolds Number Calculator
Calculate Reynolds number from fluid velocity, characteristic length, density, and dynamic viscosity. Includes a pipe-flow regime guide and worked…
Thermal Resistance Calculator
Calculate plane-wall thermal resistance and heat flow from thickness, conductivity, area, and hot and cold surface temperatures.
Climbing Grade Converter
Convert common YDS climbing grades to approximate French and UIAA equivalents with a clear conversion disclaimer.
Cycling Gear Ratio & Cadence Chart
Estimate cycling gear ratio, speed, gear inches, and a cassette cadence chart from chainring, cog, wheel, and cadence inputs.
Rowing Split & Pace Calculator
Estimate rowing finish time, average speed, and approximate erg watts from a 500 metre split and distance.
Swim Send-Off Calculator
Set a swim repeat send-off interval from distance, pace, rest, and repeat count, with total set time.
Triathlon Race-Time Planner
Plan an approximate triathlon finish time from swim pace, bike speed, run pace, leg distances, and transitions.
BC Home Owner Grant Calculator 2026
Free BC home owner grant calculator. Enter your assessed value for the 2026 grant by type and region, reduced $5 per $1,000 over the $2,075,000…
BC Renter's Tax Credit Calculator 2026
Free BC renter's tax credit calculator for 2025 and 2026: $400 maximum, reduced by 2% of income over $66,189 (2026), zero at $86,189. From the BC…
Canada Caregiver Amount Calculator (Line 30450) | TNAADO
Free Canada caregiver amount calculator. See whether line 30425 or line 30450 applies and the 2025 dollar amount: up to $8,601.
Canada Employment Amount Calculator 2025
Free Canada employment amount calculator. CRA line 31260: the lesser of $1,471 (2025) or your employment income, a federal non-refundable credit.
Child Care Expenses Deduction (Line 21400, T778) | TNAADO
Calculate your Child Care Expenses Deduction (line 21400, Form T778): per-child caps of $8,000/$5,000/$11,000, limited to 2/3 of earned income.
CPP2 Calculator: Second Additional CPP & YAMPE | TNAADO
What is CPP2? Calculate your 2026 base CPP and second additional CPP2 contribution above the $74,600 YMPE, up to the $85,000 YAMPE ceiling.
Crypto Capital Gains Tax Calculator Canada
Free Canadian crypto capital gains calculator: enter buy price, sell price and quantity for tax at the 50% inclusion rate, plus business-income…
Home Accessibility Tax Credit (HATC) Calculator | TNAADO
Calculate the Home Accessibility Tax Credit (line 31285): up to $20,000 of eligible renovation costs at 14%, for homeowners 65+ or DTC-eligible.
Home Office Expenses Calculator (T2200) 2026
Free CRA line 22900 home office expenses calculator for employees with a signed T2200. Detailed method only: the flat rate method no longer exists…
CRA Instalment Interest & Penalty Calculator
Estimate CRA instalment interest and the penalty if you paid late or too little: daily-compounded interest, less credit for payments made.
IRS Refund Date Estimator 2026
Estimate an IRS refund date from your filing date, method and direct deposit choice. Includes the EITC and ACTC mid-February refund hold and official…
Medical Expense Credit Threshold Calculator 2026 | TNAADO
Free CRA line 33099 medical expense credit threshold calculator: the lesser of 3% of net income or $2,834. Only expenses above it count.
Moving Expenses 40 km Rule Checker (T1-M) 2026 | TNAADO
Free CRA line 21900 moving expenses eligibility checker. Tests the "40 kilometres closer" rule and explains what Form T1-M covers. Not a claims…
Property Tax Estimator 2026: Toronto, Calgary
Free 2026 property tax estimator for Toronto, Calgary and Edmonton using each city's published residential rate, with city and education shares split…
Pension Income Amount Calculator (Line 31400)
Calculate the federal Pension Income Amount (line 31400): up to $2,000 of eligible pension, RRIF or annuity income at 14%, plus Ontario's $1,762…
Pension Income Splitting Calculator (T1032)
Free pension income splitting calculator (Form T1032). Find the allocation, up to the 50% CRA maximum, that minimizes your household's combined tax.
Superficial Loss Calculator Canada (61-Day Rule) | TNAADO
Free Canadian superficial loss calculator. Enter shares sold, bought in the 61-day window and still held to see the denied loss and the ACB addition.
Tradesperson Tools Deduction (Line 22900)
Free CRA line 22900 tradesperson's tools deduction calculator. Real formula: lesser of $1,000 and (eligible tool cost minus the $1,471 threshold)…
Tuition Transfer Calculator: Parent or Grandparent | TNAADO
Free tuition transfer calculator. CRA line 32400 rule: transfer up to $5,000 of a student's tuition amount, after what they need to zero their tax.
Union & Professional Dues Deduction (Line 21200) | TNAADO
Free union dues tax deduction calculator. CRA line 21200: eligible union and professional dues are 100% deductible with no cap. See what qualifies.
Vacant Home Tax Calculator: Toronto & BC 2026
Free vacant home tax calculator: Toronto Vacant Home Tax at 3% of assessed value and the BC Speculation and Vacancy Tax, from official rates.
Climate Anomaly Calculator
Compare observed temperature and precipitation with a climate normal to calculate warmer, cooler, wetter, or drier anomalies.
Degree Days Calculator
Calculate heating, cooling, or growing degree days from daily high and low temperatures with a custom base temperature.
Frost-Free Season Calculator
Calculate the number of days between a last spring frost date and first autumn frost date.
Heat Index Calculator
Calculate the National Weather Service heat index from air temperature and relative humidity in Celsius or Fahrenheit.
ABA Routing Number Validator
Free US ABA / routing transit number validator. Verifies the real weighted mod-10 checksum every US bank and ACH processor uses on the 9-digit…
Argentina CUIT / CUIL Validator & DNI Calculator | TNAADO
Free CUIT / CUIL validator and DNI to CUIL calculator. Checks the modulo 11 check digit of an Argentine tax number. Browser-only, nothing stored.
arXiv ID Validator
Free arXiv identifier format validator. Checks old (hep-th/9901001) and new (YYMM.NNNN or YYMM.NNNNN) IDs, month and digit count. Runs in your…
Australian Business Number (ABN) Validator
Free Australian Business Number validator. Checks the real modulus-89 check-digit algorithm published by the Australian Business Register (ABR) — not…
Bank of Canada Rate Dates 2026-2027 Calendar
Bank of Canada 2026 and 2027 fixed policy rate announcement dates, including Monetary Policy Report dates. Free and always visible, no sign-up.
BC PHN Validator
Free BC Personal Health Number (PHN) format validator. Checks the 10-digit format and the Mod 11 check digit from the BC Ministry of Health…
BCFSA Real Estate Licence Lookup
How to verify a realtor, brokerage or property manager is actually licensed in British Columbia: what BCFSA's Find a Professional search shows, how…
Canada Benefit Payment Dates 2026
Check 2026 Canada benefit payment dates for CCB, CPP, OAS, GIS, CDB and GST/HST or Canada Groceries and Essentials Benefit payments.
Brazil CNPJ Validator (Alphanumeric)
Free Brazil CNPJ validator for numeric and the new alphanumeric CNPJ (live since July 2026). Checks the real modulo 11 check digits, ASCII minus 48…
Canada Disability Benefit Payment Dates 2026
See the official 2026 Canada Disability Benefit payment dates and next scheduled issue date.
Canada Post Dimensional Weight Calculator
Calculate Canada Post dimensional or volumetric weight and compare it with actual parcel weight. Includes Regular Parcel and other service divisors.
Canadian Phone Number Validator
Free Canadian phone number validator. Check +1 NPA-NXX-XXXX format, confirm the area code is Canadian-assigned, and flag toll-free and premium…
Canadian Tariff & HS Lookup
Search a starter index of commonly used Canadian Customs Tariff HS items and open the official CBSA 2026 chapter schedule for the full classification…
CCB Payment Dates 2026
See the official 2026 Canada Child Benefit payment dates and the next CCB payment date.
Charity Registration Number Format Checker
Check the shape of a Canadian charity number (9-digit BN + RR + 4 digits) and link to CRA's List of Charities to confirm it is actually registered.
Validar RUT Chile | Chile RUT Validator
Validar RUT de Chile y calcular el dígito verificador (módulo 11). Free Chilean RUT/RUN validator and check digit calculator. Runs in your browser.
Chinese Resident ID Card Validator
Free Chinese resident ID card validator. Checks the 18-character number against the GB 11643-1999 ISO 7064 MOD 11-2 check character (including X) and…
CNO Find a Nurse: Ontario Nurse Lookup
CNO Find a Nurse lookup for Ontario: search by name, workplace or registration number, then open the official public register.
CPA Ontario Member Directory: Find a CPA
Search CPA Ontario's member directory to find a CPA, firm or PAL. Learn which directory fits and open the official Ontario search pages.
CPP and OAS Payment Dates 2026
See the official 2026 Canada Pension Plan, Old Age Security and GIS payment dates.
CPSBC Physician Directory Lookup
How to verify a physician is actually licensed in British Columbia: what the College of Physicians and Surgeons of BC's public Directory shows, how…
CPSO Doctor Search & Lookup: Ontario
CPSO doctor search and number lookup for Ontario: search by name or CPSO number, then open the official Physician Register.
CRA Refund Date Estimator
Estimate when the CRA may issue your Canadian income-tax refund using its current online, paper, and non-resident processing targets.
CRA Vehicle Mileage Rate Calculator
Free CRA vehicle mileage rate calculator for 2026. Enter business kilometres driven and get the reasonable per-km automobile allowance, tiered at…
Luhn Algorithm Validator
Free Luhn algorithm validator and credit card number checksum checker. Educational format-only tool: checks the math (ISO/IEC 7812 Luhn checksum)…
OIB Check | Croatian OIB Validator
Free OIB check: validate a Croatian OIB (11 digits, optional HR prefix) against its ISO 7064 MOD 11,10 check digit. Checks format and checksum only…
CUSIP Check Digit Validator & Calculator
Free CUSIP validator and check digit calculator. Verifies the real 9th-digit checksum for a North American securities identifier (stocks, bonds), or…
DEA Number Validator
Free US DEA registration number check digit validator. Verifies the 2-letter + 7-digit DEA number with its real weighted mod-10 checksum. Runs in…
DIN Lookup Canada: Drug Identification Number Search
Search a Canadian DIN in Health Canada's Drug Product Database. Check the 8-digit format and view the official product record, status and ingredients.
EAN-13 / UPC-A Check Digit Validator
Free EAN-13 and UPC-A check digit calculator. Validate an existing 12 or 13-digit barcode's real GS1 checksum, or compute the correct check digit for…
EU VAT Number Validator
Free EU VAT number format validator for all 27 member states. Real published check-digit algorithms for Germany, France, Italy, Spain and the…
FAA N-Number Format Validator
Free FAA N-number format validator. Checks a US aircraft registration mark against 14 CFR 47.15(b). Format only; runs in your browser.
Federal Corporation Lookup
Prepare a name, corporation number, or business number for the official Corporations Canada federal corporation search.
FIGI Validator & Check Digit Calculator
Free FIGI validator and check digit calculator. Checks the format and check digit of a 12-character Financial Instrument Global Identifier against…
France SIRET & SIREN Validator
Free French SIRET and SIREN validator (validateur SIRET / SIREN). Checks the Luhn check digit, including the La Poste exception. Format and checksum…
German Steuer-ID Validator
Free German tax ID (Steuer-ID) check. Validates the 11-digit format, the digit-repeat rule and the ISO/IEC 7064 MOD 11,10 check digit (Prüfziffer)…
GLN / SSCC / GTIN Check Digit Validator
Free GS1 check digit validator for GLN, SSCC, GTIN-8, GTIN-12, GTIN-13, GTIN-14 and GSIN. Validate a complete number or compute the missing mod-10…
GST/HST and CGEB Payment Dates 2026
See the 2026 GST/HST credit and Canada Groceries and Essentials Benefit payment dates.
GST/HST Deadline Calendar 2027
Generate monthly, quarterly or annual CRA GST/HST filing and payment deadlines for 2027, with business-day adjustments and CSV or calendar exports.
IBAN Validator
Free IBAN validator. Verifies the real ISO 7064 MOD 97-10 checksum (ISO 13616 structure) used by every international bank account number, with a…
ICCID Decoder and Check Digit Validator
Free ICCID decoder and SIM number check digit validator. Verifies the Luhn checksum on an 18-22 digit ICCID and reads the country calling code…
IMEI Check Digit Validator
Free IMEI check digit validator. Verifies the Luhn checksum on a 15-digit IMEI per GSMA TS.06, entirely in your browser. Format check only — not a…
India Aadhaar Number Validator
Free India Aadhaar number validator. Checks the 12-digit format and the real Verhoeff check digit, not a guessed formula. Runs in your browser…
IPFS CID Validator & Inspector
Free IPFS CID validator and inspector. Parses a CIDv0 or CIDv1 and shows its version, multibase, codec, hash function and digest length. Structure…
Irish PPS Number Validator
Free Irish PPS number validator. Checks the modulus-23 check letter of a Personal Public Service Number, including the second letter used since 2013…
ISIN Validator & Check Digit Calculator
Free ISIN validator and check digit calculator. Verifies the real ISO 6166 "double-add-double" Luhn checksum for a 12-character International…
ISMN Validator (Music Number Check Digit)
Free ISMN validator. Verifies the real check digit of a 13-digit International Standard Music Number (979-0), or computes it from the first 12…
Israeli ID Number Validator
Free Israeli ID number validator (Mispar Zehut, בדיקת תקינות תעודת זהות). Checks the 9-digit format and the Luhn-style check digit. Format and…
ISRC Validator & Code Decoder
Free ISRC validator and code decoder. Checks the format of a 12-character International Standard Recording Code (ISO 3901) and splits it into prefix…
ISSN Validator (Serial Number Check Digit)
Free ISSN validator. Verifies the real mod-11 check character (0-9 or X) of an 8-digit International Standard Serial Number, or computes it from the…
Italian Codice Fiscale Validator
Free Italian codice fiscale validator: checks the 16-character code's check letter (odd/even tables, mod 26) and decodes birth month, day, sex and…
法人番号 チェックデジット 計算・検証ツール
法人番号（13桁）のチェックデジットを計算・検証する無料ツール。12桁の基礎番号から検査用数字を計算し、13桁の番号を確認します。形式とチェックデジットのみの確認で、法人が実在するかは確認できません。入力内容は送信されません。
Japan My Number Validator (マイナンバー)
Free Japan My Number (マイナンバー) check digit validator. Checks the 12-digit format and mod 11 digit in your browser. Checksum only: cannot confirm…
Korean RRN Validator (주민등록번호)
Free Korean resident registration number checker. Verifies the 13-digit format, birth date and mod-11 check digit. Runs in your browser; format check…
LEI Validator
Free LEI validator. Verifies the 20-character Legal Entity Identifier (ISO 17442) against its real ISO 7064 MOD 97-10 check digits. Runs in your…
LSO Licence Number Lookup
What a Law Society of Ontario licence number looks like, why you'd check one, and a direct link to LSO's live Lawyer and Paralegal Directory to…
MEID Converter and Check Digit Calculator
Free MEID converter: hex to decimal (14 hex digits to 18 decimal digits), check digit calculator (Luhn mod 16) and pESN derivation, in your browser…
Mexico CLABE Validator
Free Mexico CLABE validator. Checks the 18-digit format and the real check digit (weights 3, 7, 1, mod 10). Format and checksum only. Runs in your…
MPAC Property Assessment Roll Number Checker
Free Ontario MPAC property assessment roll number format checker. Confirms the real 19-digit shape and municipality-code prefix — no checksum exists…
Dutch BSN Validator
Free Dutch BSN validator (elfproef). Checks the 9-digit burgerservicenummer 11-proef, with the last digit weighted -1, as documented on nl.wikipedia…
New Zealand IRD Number Validator
Free New Zealand IRD number validator. Checks the real modulus-11 check-digit algorithm Inland Revenue publishes — primary weights with a…
NHS Number Validator
Free UK NHS Number validator. Verifies the real Modulus 11 check digit from the NHS Data Dictionary against the 10-digit NHS Number. Runs entirely in…
Norwegian Fødselsnummer Validator
Free Norwegian fødselsnummer validator (kontrollsiffer sjekk). Checks the 11-digit format, both check digits and the encoded birth date for birth…
NPI Number Validator
Free National Provider Identifier (NPI) check digit validator. Verifies the 10-digit NPI against CMS's own Luhn checksum (with the 80840 prefix)…
NPN Lookup Canada: Health Canada NPN Search
Search an 8-digit Health Canada NPN in the official natural health product database. Check the format and view the LNHPD record from your browser.
Ontario Health Card Number Validator
Free Ontario health card number (OHIP) format validator. Checks the 10-digit number against the Ministry of Health MOD 10 check digit and explains…
Ontario Works & ODSP Earnings Calculator 2026
Estimate chargeable earnings and the income-support reduction for Ontario Works and ODSP: the $200 + 50% and ODSP $1,000 + 25% earnings exemptions…
Ontario Speeding Fine Calculator 2026
Free Ontario speeding fine calculator: set fine, victim fine surcharge, demerit points and stunt-driving warning, by zone. From the Schedule 43 set…
Ontario Trillium Benefit Calculator 2026
Estimate your Ontario Trillium Benefit for July 2026-June 2027: OEPTC, NOEC and OSTC, using CRA calculation sheets. Free and private.
ORCID iD Validator & Check Character Calculator | TNAADO
Free ORCID iD validator. Verifies the ISO/IEC 7064 MOD 11-2 check character of a 16-character ORCID iD, or computes it. Runs in your browser.
PEO Professional Engineer Lookup
What a PEO licence number looks like, why you'd check one, and a direct link to Professional Engineers Ontario's live Directory to verify a P.Eng…
Canada Personal Tax Deadline Calendar 2027
Build a Canada personal tax deadline calendar for 2027, including the April 30 balance deadline and June 15 self-employed filing date, with CSV and…
Polish PESEL Validator
Free Polish PESEL validator. Checks the real 1-3-7-9 weighted mod-10 check digit and decodes the date of birth and sex, exactly as the Polish…
Portugal NIF Validator
Free Portugal NIF validator. Verifies the real modulo 11 check digit of a 9-digit Portuguese NIF / NIPC (the PT VAT number). Runs entirely in your…
Postal Code to Province Checker (Canada)
Free Canadian postal code to province checker. See which province or territory a postal code starts in, whether it is rural, and whether it matches…
Quebec QST/TVQ Registration Number Validator
Free Quebec QST/TVQ registration number format checker, sourced from Revenu Québec's own published shape: 10 digits + TQ + 4 digits. No checksum…
RECO Registration Number Lookup
What a RECO registration number (RECO ID) looks like, why you'd check one, and a direct link to the Real Estate Council of Ontario's live Registrant…
Registered Charity Quick View
Validate a Canadian registered charity number and prepare the exact BN and RR values for CRA’s official List of Charities search.
RF Creditor Reference Generator
Free RF creditor reference generator and validator (ISO 11649). Computes or checks the two RF check digits with ISO 7064 MOD 97-10. Runs in your…
Romanian CNP Validator
Free Romanian CNP (Cod Numeric Personal) validator. Checks the 13-digit format, the 279146358279 control digit, the date of birth and the county…
S10 Tracking Number Checker (UPU 13-Character) | TNAADO
Free S10 tracking number checker. Validates the UPU 13-character format and check digit and explains the service indicator. Cannot track parcels.
SEDOL Check Digit Validator & Calculator
Free SEDOL validator and check digit calculator. Verifies the real 7th-digit checksum for a UK/Ireland securities identifier, or computes the check…
Container Number Check Digit Validator (ISO 6346) | TNAADO
Free shipping container number validator. Verifies the ISO 6346 check digit of an 11-character number, or computes it for a 10-character body.
South African ID Number Validator
Free South African ID number validator. Checks the 13-digit format and Luhn check digit and decodes date of birth, gender range and citizenship…
Spain DNI & NIE Validator
Free Spanish DNI and NIE validator. Checks the modulo 23 check letter (X, Y, Z become 0, 1, 2 for an NIE). Runs in your browser.
Swedish Personnummer Validator
Free Swedish personnummer validator. Checks the 10 or 12 digit format, the Luhn check digit and the date, including the + separator for age 100+ and…
Thai National ID Validator
Free Thai national ID number check digit validator. Checks the 13-digit format, category digit and modulo 11 check digit. Format and checksum only…
Toronto Building Permit Fee Estimator 2026
Free estimate of City of Toronto residential building permit fees: new house, addition, renovation, basement, underpinning, deck or garage, at 2026…
Turkey T.C. Kimlik No Validator
Free Turkish T.C. Kimlik No (TCKN) validator, TC kimlik no doğrulama algoritması. Checks the 11-digit format and both check digits in your browser…
IRCC UCI Number Format Checker
Free IRCC UCI (Unique Client Identifier) format checker, sourced from IRCC's own Help Centre: a UCI is either 8 digits or 10 digits. No checksum…
UK National Insurance Number Validator
Free UK National Insurance Number (NINO) format checker. Validates the real HMRC prefix rules (banned first/second letters, banned prefix pairs) and…
US EIN Validator
Free US EIN validator. Checks the 9-digit format and the first two digits against the IRS list of valid EIN prefixes, and shows which IRS campus…
Car Depreciation Estimator
Free car depreciation estimator using CRA's real Capital Cost Allowance schedule for vehicles (Class 10/10.1): 30% declining balance, halved in year…
Vessel IMO Number Check Digit Validator
Free vessel IMO number check digit validator. Verifies the checksum of a 7-digit IMO ship identification number (IMO 9074729). Checks format only…
WCB Alberta Premium Rate Lookup 2026
Free WCB-Alberta 2026 premium rate lookup. All 93 published rate groups per $100 of assessable earnings, with an estimated annual premium calculator.
WorkSafeBC Premium Rate Lookup 2026
Free WorkSafeBC (BC) 2026 average base premium rate lookup, with an estimated annual premium calculator from your assessable payroll.
Color Blindness Simulator
See any color or image the way people with protanopia, deuteranopia, or tritanopia see it. Free client-side color blindness simulator using the…
Image DPI & Print-Size Checker
Inspect a local PNG, JPEG, or GIF for pixel dimensions and embedded DPI, then calculate its maximum print size at 300 or 150 DPI. No upload.
Creator & Print Tools
Browser-local tools for marketplace sellers, self-publishers, podcasters, subtitle editors, and print designers: Shopify, Etsy and Amazon preflight…
KDP Paperback Cover Calculator
Calculate KDP paperback spine width and full-cover dimensions from paper type, page count, and trim size. Includes bleed and 300 DPI targets.
PDF MediaBox, TrimBox & BleedBox Checker
Inspect a local PDF's MediaBox, CropBox, TrimBox, and BleedBox on every page. Missing boxes and dimensions are reported without uploading the file.
Podcast Bitrate & File-Size Calculator
Estimate podcast MP3 or AAC download size from duration, bitrate, and channel mode. Includes Apple Podcasts RSS bitrate ranges.
Print Bleed & Safe-Area Calculator
Calculate print file dimensions, bleed, and safe-area geometry from a trim size with KDP paperback and commercial-print presets. Runs locally.
Subtitle QA Checker: CPL, CPS & Cue Duration
Check SRT or WebVTT subtitles for KDP title and subtitle length, cue duration, overlaps, characters per line, and characters per second. Runs locally.
Business Days Calculator
Count business days between two dates, or add business days to a date. Weekdays only (Monday to Friday) — free and instant, works entirely in your…
Global Calendar Converter
Convert a Gregorian date into Japanese Wareki, Thai Buddhist, Taiwan ROC, Ethiopian, and Persian Jalali calendar formats using localized browser…
Day of the Week You Were Born Calculator
Find out what day of the week any birthdate fell on. Enter a birthdate and see the exact day, calculated using the real Gregorian calendar.
Discord Snowflake to Date Decoder
Decode any Discord snowflake ID into its creation date, worker ID, process ID and increment, or turn a date into the minimum snowflake. Exact BigInt…
Discord Timestamp Generator
Pick a date, time and time zone and get Discord timestamp codes like <t:1618935630:R> for all nine styles, with live previews and one-click copy.
Indian National Calendar (Saka) Converter
Convert dates between the Gregorian calendar and India's civil National Calendar (Saka), with Chaitra leap-year and year-boundary rules shown clearly.
ISO 8601 Duration Parser & Builder
Free ISO 8601 duration parser. Check a duration like P3Y6M4DT12H30M5S against the RFC 3339 Appendix A grammar, see its parts, total seconds and…
Japanese Era Converter — Wareki to Gregorian
Convert Japanese Wareki dates between Reiwa, Heisei, Showa, Taisho and Meiji and Gregorian dates. Exact era-boundary validation, private and free.
Leap Year Checker
Check whether any year is a leap year under the real Gregorian rule, and see the next and previous leap years. Free, instant, and works entirely in…
Meeting Time Zone Planner
Pick 2 or more cities and find the hours of the day that fall in reasonable working hours for everyone. Real IANA time zone data, DST handled…
RFC 3339 Timestamp Validator & Parser
Free RFC 3339 validator. Check a date-time against the section 5.6 grammar, see which rule failed, and get UTC time, epoch milliseconds and offset.
Taiwan ROC Year Converter — Minguo to AD
Convert Taiwan ROC or Minguo dates to Gregorian AD dates and back. Full date validation for forms, records and official documents.
Thai Buddhist Calendar Converter — BE to AD
Convert Thai Buddhist Era dates to Gregorian AD dates and back. Validate complete dates privately with no uploads or signup.
CRC32 & Adler-32 Checksum Calculator
Free CRC32, Adler-32, Fletcher-16 and Fletcher-32 checksum calculator for text and files. Nothing is uploaded; verified against published test…
KSUID & ULID Decoder
Free KSUID decoder and ULID to timestamp converter. Paste an ID, get the embedded UTC date, payload or randomness. Runs in your browser; checked…
Nano ID Generator
Generate Nano IDs online: short, URL-safe, cryptographically random unique identifiers. Choose the alphabet (URL-safe, alphanumeric, numeric, hex, or…
PKCE Code Verifier & Challenge Generator
Generate a PKCE code_verifier and S256 code_challenge online (RFC 7636). Uses WebCrypto and base64url, runs entirely in your browser, and can also…
ULID Generator
Generate ULIDs online: 26-character, time-sortable identifiers encoded in Crockford's Base32. A compact, lexicographically sortable alternative to…
UUID v7 & MongoDB ObjectId Timestamp Decoder
Free UUID v7 timestamp decoder and MongoDB ObjectId to date converter. Paste an ID, get the embedded UTC date. Runs in your browser; verified against…
CSS Clamp Calculator
Build a CSS clamp() expression from minimum, viewport, and maximum sizes with px/rem output and a live preview.
Developer Utilities
Local developer utilities for MIME types, URL query strings, JSON Lines, and responsive CSS clamp values.
JSON Lines / NDJSON Validator
Validate JSON Lines and NDJSON locally, see line-specific errors, and convert valid records to a JSON array.
MIME Type & Extension Mapper
Map common file extensions to MIME types and reverse-lookup extensions from a media type in your browser.
URL Query-string Parser & Builder
Parse and build URL query strings locally with duplicate keys, order, blank values, and URL encoding preserved.
Cron Expression Parser & Next Run Times
Free cron expression parser. Validate a crontab schedule, read it in plain English and see its next run times in UTC or local time. Runs in your…
Docker Image Name Validator & Parser
Check a Docker or OCI image reference against the distribution/reference grammar and split it into registry, repository, tag and digest. Syntax only.
Hostname & FQDN Validator (RFC 1123)
Free hostname and FQDN validator. Check characters, label and name length, hyphens, trailing dot, numeric TLD and underscores. Syntax only; in your…
Kubernetes Name Validator
Free Kubernetes name validator. Check a Pod, Service, Namespace or other object name against the DNS subdomain, RFC 1123 label, RFC 1035 label and…
Semver Validator & Version Comparer
Free semver validator. Check a version against the official SemVer 2.0.0 regex, see its major, minor, patch, pre-release and build parts, and compare…
Alberta Strike Vote & Timeline Calculator
The Alberta strike timeline under the Labour Relations Code: 14-day mediator cooling-off, supervised strike vote, 120-day vote expiry and 72-hour…
Federal Strike Timeline: 21-Day Cooling-Off
Enter the date the Minister notified the parties under the Canada Labour Code to see the 21-day cooling-off end, earliest strike day and strike vote…
Canada Labour Code Complaint Deadlines Calculator | TNAADO
Last day to file an unjust dismissal complaint (90 days, s.240), unpaid wages complaint (6 months, s.251.01) or fair representation complaint (s.97).
Alberta Statutory Holiday Dates 2026
The real 2026 Alberta statutory holiday dates and day of week, sourced directly from alberta.ca. Free lookup, no signup.
British Columbia Statutory Holiday Dates 2026
The real 2026 British Columbia statutory holiday dates and day of week, sourced directly from gov.bc.ca. Free lookup, no signup.
Federal Statutory Holiday Dates 2026
The real 2026 federal (Canada Labour Code) statutory holiday dates and day of week, sourced directly from Justice Laws Website. Free lookup, no…
Statutory Holiday Dates by Province 2026
The real 2026 statutory holiday calendar dates for Ontario, BC, Alberta, Quebec and federally regulated workplaces — sourced from each government…
Ontario Statutory Holiday Dates 2026
The real 2026 Ontario statutory holiday dates and day of week, sourced directly from ontario.ca. Free lookup, no signup.
Quebec Statutory Holiday Dates 2026
The real 2026 Quebec statutory holiday dates and day of week, sourced directly from CNESST. Free lookup, no signup.
72-Hour Strike Notice Calculator (Federal, BC) | TNAADO
Enter when a strike or lockout notice was given to get the earliest legal start under the Canada Labour Code (s.87.2) or the BC Labour Relations Code.
Strike Vote Expiry Calculator: Federal, BC, Alberta | TNAADO
Enter the strike vote date to see the last day a strike can start before the vote lapses: federal 60 days, British Columbia 3 months, Alberta 120…
Union Open Period Calculator: Raid & Decert
Enter a collective agreement start date and term to see the raid and decertification windows under the Canada Labour Code or the BC Labour Relations…
Baker's Percentage & Dough Hydration Calculator | TNAADO
Calculate baker's percentages, total dough weight and hydration from flour, water and ingredient weights in grams.
Coffee Brew Ratio Calculator
Solve coffee-to-water brew ratios in both directions, with metric and practical imperial amounts for filter or immersion coffee.
USDA Food Nutrition Lookup
Search USDA FoodData Central for calories, protein, carbs, fat, fiber and sodium by food and serving weight.
Nutrition Label Generator
Generate a simple printable nutrition label from USDA FoodData Central food data and your serving size.
Pizza Dough Hydration & Dough-Ball Calculator
Calculate pizza dough flour, water, salt, oil and yeast from dough-ball count, ball weight and baker's percentages.
Protein & Calorie Calculator
Compare protein, calories and protein density for foods using gram-scaled USDA FoodData Central nutrition data.
Recipe Nutrition Calculator
Calculate recipe calories, protein, carbs, fat, fiber and sodium from USDA FoodData Central ingredients and gram weights.
Sourdough Starter Feeding Calculator
Scale sourdough starter feedings from a seed amount and starter-to-flour-to-water ratio, with metric and imperial weights.
FDA NDC Lookup & 10 to 11 Digit Converter
Look up an FDA National Drug Code and convert a 10-digit NDC to its 11-digit billing format. See labeler, product, package and listing details from…
Appliance Electricity Cost Calculator
Calculate monthly and annual appliance electricity cost from watts, hours, quantity and your editable electricity rate.
Battery Backup Runtime Calculator
Estimate home battery backup runtime from battery capacity, usable discharge, inverter efficiency and average load.
Generator Load & Surge Sizing Calculator
Estimate generator running and starting watt requirements from a home appliance load list and an editable headroom margin.
Solar Payback Calculator
Estimate solar payback from system cost, annual production, self-consumption, export credit, degradation and maintenance.
Water Heater Recovery Time Calculator
Estimate electric water-heater recovery time from tank gallons, inlet and target temperature, heater input and efficiency.
IRCC Citizenship & Sponsorship Fee Calculator
Add up what your family pays IRCC: citizenship for adults and minors, spouse or parent sponsorship with dependants, and PR card renewal, RPRF split…
Express Entry Draw Tracker & History
Filter recent official IRCC Express Entry invitation rounds by draw type and CRS score, with invitation counts and official detail links.
Express Entry Proof of Funds Calculator
Look up the settlement funds you must show for Express Entry (FSW / FST) by family size, straight from IRCC's current table. Free, private.
H-1B Wage & Employer Lookup
Explore official U.S. Department of Labor LCA wage bands by H-1B employer or job family using a compact FY2025 Q4 snapshot.
IELTS Overall Band Score Calculator
Calculate your IELTS overall band from Listening, Reading, Writing and Speaking, with the official rounding rule (.25 and .75) shown step by step…
LMIA Exemption Code Lookup: IMP Work Permits
Search IRCC's list of LMIA exemption codes for the International Mobility Program: CUSMA, intra-company transfer, significant benefit, spousal…
Study Permit Eligibility Checker: Canada
Check the five requirements for a Canadian study permit: DLI acceptance, funds, criminal record, medical fitness, intent to leave, plus IRCC's funds…
U.S. Visa Bulletin Priority Date Checker
Check a U.S. immigrant visa priority date against the current Department of State Visa Bulletin for family and employment preference categories.
USCIS Fee Checker & Calculator
Check current USCIS filing fees for common forms, including I-130, I-485, I-765, I-751 and N-400, using the official Form G-1055 fee schedule.
USCIS Processing Time Dashboard
Explore official USCIS historical national median processing times for selected forms from FY2021 through FY2026.
Visa Bulletin Movement History
Track official U.S. Visa Bulletin Final Action Date movement for F2A, EB-2 and EB-3 series across 2026.
Colombia NIT Check Digit Calculator (DV)
Free Colombia NIT check digit (dígito de verificación) calculator and validator. Computes the DIAN DV or checks a full NIT. Cannot confirm RUT…
EORI Number Validator & Lookup
Check an EU EORI number's official country-prefix and length format in your browser, then open the European Commission's official EORI validation…
EU VAT Rate Calculator
Estimate EU VAT from a net or VAT-inclusive amount using a dated reference table of standard member-state rates and official European Commission…
International Trade, Postal & Payments Tools
Browser-first tools for postal formatting, ZIP and postcode checks, customs identifiers, EU VAT, SEPA payments, LEIs and bank-routing codes.
LEI Lookup: Search GLEIF by LEI or Company Name
Validate a Legal Entity Identifier locally and search the official GLEIF public API for current entity reference data.
International Postal Address Formatter
Format a clean mailing address for the U.S., UK, Canada, or Australia in your browser. Local-first, copy-ready, and built for privacy.
SEPA & IBAN Country Checker
Check a country or territory's IBAN country code, currency and SEPA scheme context, then validate a full IBAN with TNAADO's browser-only checksum…
SWIFT / BIC Validator & Lookup
Validate a SWIFT BIC's ISO 9362 structure in your browser, then search the official SwiftRef public BIC directory without copying its licensed data.
TARIC Code Lookup & Duty Calculator
Validate an 8 or 10 digit TARIC/CN code and estimate EU customs duty and import VAT from the rate you confirm in the official TARIC consultation.
IP Range to CIDR Converter
Free IP range to CIDR converter (minimal cover) and CIDR to range converter for IPv4, plus IP to decimal, hex and binary. Runs in your browser.
MAC Address Generator
Free random MAC address generator. Create valid, locally-administered unicast or multicast MAC addresses with your choice of separator and case, one…
SSH Key Fingerprint Calculator
Free SSH key fingerprint calculator. Paste an OpenSSH public key to get its SHA256 and MD5 fingerprints, key type and bit length. Runs in your…
QR Code Reader & Scanner
Free QR code reader. Scan with your camera or upload a photo to decode a QR code instantly — URLs, WiFi, vCards, email, and more, parsed and…
Baby Name Generator
Generate baby name ideas from real U.S. Social Security Administration birth-record data, not a made-up list. Pick a gender, an era (1900s to 2000s)…
Business Name Generator
Generate brandable business and startup name ideas in four styles: tech/SaaS, creative studio, eco/wellness, and bold founder-classic. Free, instant…
Secret Santa Generator, No Email or Sign-Up
Free Secret Santa generator with no email and no sign-up. Add exclusions so couples don't draw each other, set a budget, then share private reveal…
Random Team Name Generator
Free random team name generator for sports teams, fantasy football, trivia night, and work/Slack channels. Generate 5+ names at once, free, no…
Bitcoin Address Validator: Base58, Bech32, Bech32m | TNAADO
Free Bitcoin address validator: checks Base58Check and Bech32/Bech32m checksums in your browser. Format and checksum only, not whether it is funded…
Content-Security-Policy Generator & Validator
Generate and validate Content-Security-Policy and Content-Security-Policy-Report-Only headers locally. Check directives, source expressions, schemes…
Encrypt / Decrypt Text & Files (AES)
Password-protect text or a file with AES-256-GCM, entirely in your browser. PBKDF2 key derivation at 600,000 iterations (OWASP-recommended). Nothing…
Ethereum Address Checksum Validator (EIP-55)
Free Ethereum address checksum checker and converter (EIP-55) for every EVM chain. Format and checksum only: cannot tell if an address exists or…
otpauth:// URI Parser & Builder
Parse or build otpauth:// key URIs for TOTP and HOTP authenticator apps: secret, issuer, algorithm, digits, period and counter. Runs locally in your…
Password Entropy Calculator
Calculate password or passphrase entropy in bits: length x log2(character pool), or words x log2(word list) for Diceware. Runs in your browser.
Permissions-Policy Generator & Validator
Generate and validate Permissions-Policy and Permissions-Policy-Report-Only headers locally. Check feature names, allowlists, origins, and schemes…
TOTP Code Generator
Generate live 6-digit TOTP authenticator codes from a Base32 secret, entirely in your browser. Test a 2FA setup before you scan it. RFC 6238 / RFC…
Hreflang Checker & Generator
Check hreflang HTML, HTTP Link headers, and XML sitemap alternates for valid language-region codes, x-default, canonicals, reciprocity, and copyable…
Social Preview Checker
Preview and audit Open Graph and Twitter Card metadata for Facebook, LinkedIn, X, Discord and WhatsApp. Paste HTML and see missing or invalid tags…
YouTube Title, Description & Tags Checker
Check a YouTube title (100 characters), description (5,000 bytes) and tags (500 characters) against the YouTube Data API limits, with live pass/fail…
Dimensional Weight Calculator: Billable Weight | TNAADO
Calculate dimensional, volumetric, and billable shipping weight from package dimensions and actual weight. Compare USPS, UPS, and FedEx divisors.
FedEx Dimensional Weight Calculator
Estimate FedEx dimensional and billable weight from package dimensions and actual weight, with a transparent divisor and official-source caveat.
Trade, Shipping & Packaging Tools
Free U.S. HTS, landed-cost, carrier dimensional-weight, tracking-number, thermal-label, and carton-packout tools for shipping and packaging…
UPS Dimensional Weight Calculator
Estimate UPS dimensional and billable weight from package dimensions and actual weight, with a transparent divisor and official-source caveat.
USPS Dimensional Weight Calculator
Estimate USPS dimensional and billable weight from package dimensions and actual weight, with a source-stamped caveat about USPS service rules.
BC Rent Increase Guideline Calculator 2026
Free BC rent increase guideline calculator. Applies the province's real 2026 limit (2.3%) to your current rent. Runs in your browser.
Eviction Notice Timeline Calculator by Province | TNAADO
Find the earliest date a landlord's notice to end a tenancy can take effect in Ontario, British Columbia or Alberta, using each province's notice…
Landlord Entry Notice Rules by Province
Written notice a landlord must give before entering your rental for repairs, inspection or a showing, and the time window. Ontario, BC, Alberta.
Manitoba Rent Increase Guideline Calculator 2027 | TNAADO
Free Manitoba rent increase guideline calculator. Applies the published guideline (3.0%, effective January 1, 2027) to your rent. Runs in your…
New Brunswick Rent Increase Cap Calculator 2026 | TNAADO
Free New Brunswick rent increase cap calculator. Applies the 3% cap, or the 9% ceiling for approved renovation increases, to your rent. In your…
Nova Scotia Rent Increase Cap Calculator 2026
Free Nova Scotia rent increase cap calculator. Applies the province's 5% rent cap (in effect to December 31, 2027) to your current rent. Runs in your…
PEI Rent Increase Calculator 2026 & 2027
Free PEI rent increase calculator. Applies IRAC's allowable annual increase (2% for 2026, 2.1% for 2027) to your current rent. Runs in your browser.
Security Deposit Rules by Province: Canada
Can a landlord charge a security or damage deposit? Ontario says no; BC and Alberta caps confirmed from each province's Residential Tenancy Act.
Braille Translator
Free text to Braille translator. Convert English text into standard Grade 1 (uncontracted) Braille using real Unicode Braille characters, with…
DNA Reverse Complement & Protein Translator
Reverse complement, DNA to protein translation in three forward frames, and GC content for a DNA sequence. NCBI standard genetic code. FASTA…
NATO Phonetic Alphabet Converter
Free NATO phonetic alphabet converter. Type any text and get back the military phonetic spelling — Alpha, Bravo, Charlie — letter by letter, plus…
Reading Time Calculator: Exact Minutes & Seconds
Calculate reading time live to the second from a Unicode-aware word count and adjustable WPM. Free, private, and processed locally in your browser.
ROT13 / Caesar Cipher Encoder & Decoder
Free ROT13 converter and Caesar cipher encoder/decoder. Shift letters by any amount from 1-25, or use the classic ROT13 (shift 13), which decodes…
X (Twitter) Character Counter for Posts
Count X post length with local weighted rules based on twitter-text v3. See the standard 280-point threshold, URL and emoji handling, and caveats.
HTS Code Lookup: U.S. Tariff Schedule Search
Search the current U.S. Harmonized Tariff Schedule by HTS number or product wording. See hierarchy, descriptions, units, duty rates and the USITC…
Trade Tools | HTS Lookup & Landed Cost
Trade tools for U.S. HTS research and import landed-cost planning, with official-source links and update dates.
U.S. Import Duty & Landed Cost Calculator (HTS)
Estimate import duty, brokerage, taxes, and total landed cost from customs value, freight, insurance, and a known duty rate. Clear caveats and…
UK Commodity Code Lookup
Prepare a UK commodity-code search and open HMRC's official Trade Tariff service for duty, VAT and import or export measures.
Companies House Lookup
Prepare an official Companies House search by company name or registration number. Validate UK company-number shape without storing your query.
UK Tools
Free UK tools for take-home pay, National Insurance, statutory pay, Stamp Duty, benefit payment dates, tax refunds and official UK services.
UK National Insurance Calculator 2026-27
Calculate estimated employee Class 1 National Insurance for the 2026-27 UK tax year using the standard primary and upper earnings thresholds.
PIP Payment Dates
Project Personal Independence Payment dates every four weeks and account for weekends or bank holidays with the official GOV.UK calendar.
UK Postcode Validator & Lookup
Check and format a UK postcode locally, including the special GIR 0AA shape, then open the official Royal Mail Postcode Finder for a live address…
UK Tax Refund Estimator 2026-27
Estimate a possible UK Income Tax refund or underpayment for 2026-27 using GOV.UK personal allowance and tax bands for Scotland or the rest of the UK.
UK Self Assessment Deadline Calendar 2027
Generate UK Self Assessment paper, online, balancing-payment and payments-on-account deadlines for a tax year, with working-day adjustments and…
Stamp Duty Calculator: England & N. Ireland 2026 | TNAADO
Calculate residential Stamp Duty Land Tax for England and Northern Ireland: standard, first-time buyer, additional-property and non-UK-resident…
State Pension Payment Dates
Project UK State Pension payment dates from the last two National Insurance digits, using the official weekday rule and GOV.UK bank-holiday calendar.
UK Statutory Maternity & Paternity Pay 2026-27 | TNAADO
Estimate UK statutory maternity, adoption, paternity, shared parental, neonatal care or parental bereavement pay for 2026-27.
UK Take-Home Pay Calculator 2026-27
Estimate UK take-home pay for 2026-27 after Income Tax, employee National Insurance and a simple workplace pension contribution.
Universal Credit Payment Dates
Project Universal Credit payment dates by month and see weekend or bank-holiday adjustments using the GOV.UK bank-holiday calendar.
UK Visa Processing Dashboard
Track elapsed calendar and working days since a UK visa application, then open the current official UKVI processing-time service and guidance.
401(k) Contribution Limit Calculator 2026
Estimate 2026 employee deferral room for a 401(k), 403(b) or governmental 457(b) plan using the IRS regular and age-based catch-up limits.
Beneficial Ownership Information Status Check
Check the current FinCEN BOI reporting starting point for a U.S.-created entity or a foreign entity registered to do business in the United States.
College Cost Lookup
Look up reported U.S. college tuition, attendance cost and average net price from the College Scorecard.
College Graduation Rate Lookup
Look up reported U.S. college completion and retention rates from the College Scorecard.
College Outcomes Lookup
Look up reported U.S. college earnings, admission rate and student size from the College Scorecard.
IPEDS UNITID Lookup
Look up a U.S. college's six-digit IPEDS UNITID and NCES College Navigator profile.
EIN & 501(c)(3) Nonprofit Lookup (IRS Data)
Look up a nonprofit by EIN or name in the IRS Exempt Organizations Business Master File. See the 501(c)(3) subsection, deductibility code and status…
U.S. Employment Rules Tools
Compare U.S. state minimum wage, overtime, payday frequency and paid sick leave rules from official sources.
Minimum Wage by State 2026
Compare 2026 U.S. state minimum wages with an official federal baseline and estimate gross minimum pay.
U.S. Overtime Pay Explorer 2026
Estimate U.S. overtime pay from the 40-hour workweek baseline and see state daily-threshold exceptions.
U.S. Payday & Paid Sick Leave by State
Compare U.S. state payday frequency requirements and the dated Department of Labor paid sick leave coverage snapshot.
IRS Estimated Tax Deadline Calendar 2027
Build the IRS Form 1040-ES estimated tax payment calendar for 2027, including weekend and federal holiday adjustments, with CSV and calendar exports.
Federal Estimated Tax Due Dates 2026
Find the 2026 federal estimated tax payment due dates from IRS Publication 505, including all four Form 1040-ES installments.
FAFSA Unmet Need Estimator
Estimate college financial-aid need and the remaining gap after SAI and other aid.
HCPCS Level II Code Search
Search the latest public CMS HCPCS Level II alphanumeric code file by code or description.
ICD-10-CM Code Search
Search the FY 2026 U.S. ICD-10-CM diagnosis code descriptions from the official CMS code files.
W-2 & 1099 Deadline Planner
Plan common U.S. W-2, 1099-NEC and 1099-MISC deadlines using the IRS federal filing rules.
IRS Mileage Deduction Calculator 2026
Calculate a 2026 IRS standard mileage amount for business, medical, military moving or charitable driving, with the July 1 rate change.
2026 FHA County Loan Limit Lookup
Search 2026 HUD FHA forward mortgage limits by county and property units, including the national floor and high-cost ceiling.
2026 FHFA Conforming Loan Limit Lookup
Search 2026 FHFA Fannie Mae and Freddie Mac conforming loan limits by county and property units, then compare a proposed loan amount.
U.S. Mortgage & Commercial Lending Tools | TNAADO
U.S. mortgage and commercial real estate calculators for federal loan limits, PMI timing, refinance break-even, CRE DSCR and balloon balances.
PMI Removal Planner
Estimate when conventional PMI can be requested at 80 percent, automatically terminated at 78 percent and ended at the midpoint of the loan term.
Refinance Break-Even Calculator
Estimate how many months of lower mortgage payments recover refinance closing costs, points and other stated fees.
NAICS Code Lookup: 2022 Search & SIC Crosswalk | TNAADO
Search the 2022 U.S. NAICS code hierarchy by business activity or code, open industry definitions, and compare historical NAICS to SIC relationships.
U.S. NPI Provider Lookup
Look up a U.S. National Provider Identifier in the official CMS NPPES directory and inspect a compact provider record.
IRS Payroll Tax Deposit Schedule Helper
Estimate a U.S. federal payroll tax deposit due date from the IRS lookback amount and payday.
Pell Grant Estimator 2026–27
Estimate a possible 2026–27 Federal Pell Grant range from your SAI, cost of attendance and enrollment.
PSLF Progress Planner
Track your estimated path to 120 qualifying Public Service Loan Forgiveness payments.
Quarterly Estimated Tax Calculator 2026
Estimate four equal 2026 federal estimated-tax payments after withholding and payments already made.
Required Minimum Distribution Calculator 2026
Estimate a 2026 required minimum distribution from an IRA or defined-contribution retirement account using the IRS Uniform Lifetime Table.
Roth IRA Contribution Calculator 2026
Estimate 2026 Roth IRA contribution room from age, taxable compensation, filing status, modified AGI and other IRA contributions.
U.S. Sales Tax Nexus Screening Tool
Screen common U.S. sales-tax nexus triggers for a small business before checking the relevant state rules.
U.S. Self-Employment Tax Calculator 2026 (Social Security & Medicare)
Estimate 2026 federal self-employment Social Security and Medicare tax from net self-employment earnings, with an optional wage-base adjustment.
Social Security Break-Even Calculator: 62, FRA, 70 | TNAADO
Compare simplified Social Security benefits at 62, full retirement age and 70, then estimate nominal claiming break-even ages using SSA rules.
Federal Student Loan Payment Comparison
Compare estimated standard and extended federal student loan payments with transparent assumptions.
VA Disability Payment Schedule 2026
Find expected 2026 VA disability compensation payment dates and review current basic rating amounts from the official 2026 rate tables.
U.S. ZIP Code Validator & Lookup
Check U.S. ZIP Code and ZIP+4 format locally, then open the official USPS lookup for an address-level result. Nothing you type is uploaded.
Annual Fuel Cost Comparison Calculator | Gas vs EV
Compare annual gasoline or electricity costs for two vehicles using official EPA records, your annual mileage and your local fuel and electricity…
Clean Vehicle Credit Date & Eligibility Check
A plain-language IRS clean-vehicle-credit checklist for acquisition date, vehicle type, price, income and seller time-of-sale reporting.
EV Charging Cost & Time Calculator by Vehicle
Estimate home EV charging cost and time by vehicle using official EPA range, electricity-use and charge-time fields plus your rate and charge level.
EPA Fuel Economy Lookup by Year, Make & Model | TNAADO
Look up official EPA fuel economy by year, make, model and configuration. See MPG, MPGe, fuel type, EV range, annual fuel cost and charge time.
Free VIN Decoder & NHTSA Recall Lookup
Decode a 17-character VIN free with NHTSA vPIC, see vehicle specifications, and check matching U.S. safety recalls. No account or stored VIN.
Video Aspect Ratio Calculator
Calculate a missing video width or height from a target aspect ratio like 16:9, 9:16 or 4:3, or detect the aspect ratio from a width and height you…
Video Bitrate Calculator
Work out the video bitrate you need from a target file size and duration. Enter your size and length, pick an audio bitrate, and get a recommended…
Added September 27, 2026 · 12 new tools
RDSP Grant & Bond Calculator 2026
Free RDSP Grant and Bond calculator for Canada. 2026 ESDC figures: Canada Disability Savings Grant up to $3,500/year and Bond up to $1,000/year.
Payroll Remittance Due Date Calculator 2026
Free CRA payroll remittance due date calculator. Enter your remitter type and pay period for the exact due date, shifted for weekends and 2026…
Canada Training Credit Calculator 2026
Free Canada Training Credit calculator. CRA line 45350: 50% of eligible tuition, limited to your training credit limit ($250/year, $5,000 lifetime)…
GST/HST Input Tax Credit (ITC) Calculator 2026 | TNAADO
Free GST/HST Input Tax Credit calculator for Canadian registrants. CRA RC4022 rules: the 90% test, business-use apportionment, 50% meals limit.
Home Buyers' Amount Calculator 2026 (Line 31270) | TNAADO
Free federal Home Buyers' Amount credit calculator for Canada. CRA line 31270 rate: 14% of up to $10,000 for first-time buyers or buyers with a…
Multigenerational Renovation Tax Credit (MHRTC) | TNAADO
Free MHRTC calculator for Canada. CRA line 45355 rate: 14.5% of qualifying renovation costs, up to $7,250, refundable.
Canada Post Postage Rate Calculator: Lettermail | TNAADO
Free Canada Post postage calculator: domestic, U.S. and international Lettermail rates by weight, with single-stamp vs booklet price.
WSIB Ontario Premium Rate Lookup 2026
Free WSIB (Ontario) 2026 premium class rate lookup. All 35 published class rates per $100 of insurable payroll, with an estimated annual premium…
JWT Decoder (JSON Web Token)
Free JWT decoder. Paste a JSON Web Token to see its decoded header and payload claims instantly, with exp/iat/nbf shown as readable dates. Runs…
Door-to-Door Sales Cooling-Off Period by Province | TNAADO
How long you have to cancel a door-to-door or direct sales contract in Canada. BC, Alberta and Quebec confirmed at 10 days, from each province's own…
New Home Warranty: Ontario Tarion vs BC 2-5-10 | TNAADO
What your mandatory new home warranty covers year by year: Ontario's Tarion 1-2-7 model vs British Columbia's 2-5-10, with the real dollar coverage…
IP Subnet / CIDR Calculator
Free IPv4 subnet calculator. Enter an IP address and CIDR prefix to get the network address, broadcast address, subnet mask, wildcard mask, and…
Added September 26, 2026 · 54 new tools
Allowance for the Survivor Calculator
Free Allowance for the Survivor calculator. Estimate this monthly, tax-free OAS benefit for a low-income widow or widower aged 60 to 64.
CPP Disability Benefit Calculator
Estimate your monthly CPP disability benefit (flat rate plus 75% of your retirement pension), check the contributory rule, and add the child benefit.
CPP Post-Retirement Benefit Calculator 2026
Free CPP Post-Retirement Benefit (PRB) calculator. Real 2026 Service Canada figures for the top-up pension you earn by working while already…
OAS Deferral Calculator
Free Old Age Security (OAS) deferral calculator. See exactly how much bigger your OAS pension gets for every month you delay past 65, up to 36% at…
RESP Withdrawal (EAP) Limit Checker
Free RESP Educational Assistance Payment (EAP) limit checker. See the real $8,000 full-time / $4,000 part-time withdrawal caps before you request a…
RRIF Minimum Withdrawal Calculator by Age
Free RRIF minimum withdrawal calculator using the CRA prescribed-factor schedule (Income Tax Regulations 7308) by age. The same schedule applies to a…
CMHC Premium Calculator 2026 (Mortgage Insurance) | TNAADO
Free CMHC mortgage default insurance premium calculator: the premium rate table by loan-to-value, 30-year amortization surcharge and Ontario PST on…
CCA Class & Rate Lookup for Small Business
Free Capital Cost Allowance lookup for Canadian small business: the CRA class number, prescribed rate and half-year rule for common business assets.
Charitable Donation Tax Credit Calculator 2026 | TNAADO
Free federal charitable donation tax credit calculator for Canada. Real CRA rates: 14% on the first $200, 29% above, 33% top-up for high income.
GST/HST Quick Method Calculator 2026
Free GST/HST Quick Method remittance calculator for small businesses. CRA RC4058 rates by province and business type, plus the 1% credit on the first…
Small Business Deduction Grind Calculator (CCPC) | TNAADO
See how much of your CCPC's $500,000 small business deduction limit is ground down by taxable capital over $10M and passive income over $50,000.
Tuition Tax Credit Calculator Canada (T2202)
Free federal tuition tax credit calculator. Estimate your line 32300 / T2202 credit, how much you can transfer to a parent or spouse, and the…
Canada Child Benefit (CCB) Calculator
Calculate your July 2026-June 2027 Canada Child Benefit and Child Disability Benefit from your adjusted family net income and the number and ages of…
Canada Disability Benefit Calculator 2026
Estimate your Canada Disability Benefit for July 2026-June 2027: up to $204.20/month, income-tested, from Canada.ca's own published figures.
Groceries & Essentials Benefit Calculator 2026 | TNAADO
Estimate your Canada Groceries and Essentials Benefit (formerly the GST/HST credit) for July 2026-June 2027, from CRA's published figures.
Canada Workers Benefit (CWB) Calculator
Calculate your 2025 Canada Workers Benefit: the basic amount, the CWB disability supplement, and the real secondary-earner exemption most calculators…
Canada Workers Benefit: Quebec, Alberta, Nunavut | TNAADO
The 2025-tax-year Canada Workers Benefit for Quebec, Alberta and Nunavut, which each file their own Schedule 6 with different amounts and rates.
CBSA Duty & Tax Calculator: Returning to Canada | TNAADO
Free CBSA personal exemption and duty/tax estimator for Canadians returning from abroad: 24-hour, 48-hour and 7-day exemptions plus GST/HST.
EI Benefit Repayment (Clawback) Calculator
Free EI benefit repayment / clawback calculator. Find out if you have to repay part of your regular EI benefits at tax time, using the CRA's 1.25x…
EI Caregiving Benefit Calculator 2026
Free EI caregiving benefit calculator: family caregiver benefit for a critically ill child (35 weeks) or adult (15 weeks), and the compassionate care…
Federal Severance Pay Calculator (CLC)
Free severance pay and notice of termination calculator for federally regulated employees under the Canada Labour Code -- banks, airlines, telecoms…
GST/HST New Housing Rebate Calculator 2026
Federal new housing rebate, the First-Time Home Buyers' GST Rebate, and Ontario's standard + temporary Enhanced rebate — 4 separate programs…
ROE Reason Code Lookup (Record of Employment)
Free lookup for every Record of Employment (ROE) Block 16 reason code -- A through Z -- with what each one means and how it can affect an EI claim…
VAC Pain and Suffering Compensation Table 2026 + Calculator
VAC Pain and Suffering Compensation table 2026: full Schedule 3 rates by % disability, from $14.20 to $1,419.82/month. Enter your percentage for…
Alberta Pregnancy & Parental Leave 2026
Alberta job-protected pregnancy leave is 16 weeks; parental leave up to 62 weeks. Job protection, not EI weeks.
British Columbia Pregnancy & Parental Leave 2026 | TNAADO
British Columbia job-protected pregnancy leave is 17 weeks; parental leave up to 62 weeks (61 if pregnancy leave also taken). Job protection, not EI…
Federal Pregnancy & Parental Leave 2026 (CLC)
Federal (Canada Labour Code) job-protected pregnancy leave is 17 weeks; parental leave up to 63 weeks. Job protection, not EI weeks.
Pregnancy & Parental Leave by Province 2026
Job-protected pregnancy and parental leave length by province and territory, from Ontario's 17-week pregnancy leave to Nunavut's 52 weeks. Not EI…
Manitoba Pregnancy & Parental Leave 2026
Manitoba job-protected pregnancy leave is 17 weeks; parental leave up to 63 weeks. Job protection, not EI weeks.
New Brunswick Pregnancy & Parental Leave 2026
New Brunswick job-protected pregnancy leave is 17 weeks; parental leave up to 62 weeks. Job protection, not EI weeks.
Newfoundland & Labrador Parental Leave 2026
Newfoundland and Labrador job-protected pregnancy leave is 17 weeks; parental leave up to 61 weeks. Job protection, not EI weeks.
NWT Pregnancy & Parental Leave 2026
Northwest Territories job-protected pregnancy leave is 17 weeks; parental leave up to 61 weeks. Job protection, not EI weeks.
Nova Scotia Pregnancy & Parental Leave 2026
Nova Scotia job-protected pregnancy leave is 16 weeks; parental leave up to 77 weeks (61 if pregnancy leave also taken). Job protection, not EI weeks.
Nunavut Pregnancy & Parental Leave 2026
Nunavut job-protected pregnancy leave is 17 weeks; parental leave up to 37 weeks. Job protection, not EI weeks.
Ontario Pregnancy & Parental Leave 2026
Ontario job-protected pregnancy leave is 17 weeks; parental leave up to 63 weeks (61 if pregnancy leave also taken). Job protection, not EI weeks.
PEI Pregnancy & Parental Leave 2026
Prince Edward Island job-protected pregnancy leave is 17 weeks; parental leave up to 62 weeks. Job protection, not EI weeks.
Quebec Pregnancy & Parental Leave 2026
Quebec job-protected pregnancy leave is 18 weeks; parental leave up to 65 weeks. Job protection, not EI weeks.
Saskatchewan Pregnancy & Parental Leave 2026
Saskatchewan job-protected pregnancy leave is 19 weeks; parental leave up to 71 weeks (59 if pregnancy leave also taken). Job protection, not EI…
Yukon Pregnancy & Parental Leave 2026
Yukon job-protected pregnancy leave is 17 weeks; parental leave up to 63 weeks. Job protection, not EI weeks.
Alberta Termination Notice Calculator 2026
Minimum termination notice in Alberta: 8 weeks maximum, qualifying more than 90 days (about 3 months). Calculate what you are owed.
British Columbia Termination Notice Calculator 2026 | TNAADO
Minimum termination notice in British Columbia: 8 weeks maximum, qualifying more than 3 consecutive months. Calculate what you are owed.
Federal Termination Notice Calculator 2026 (CLC) | TNAADO
Minimum termination notice in Federal (Canada Labour Code): 8 weeks maximum, qualifying 3 consecutive months. Calculate what you are owed.
Termination Notice Period Calculator Canada 2026
Statutory minimum notice of termination by province and territory, from 6 weeks (Newfoundland and Labrador) to 8 weeks. Calculate what you are owed…
Manitoba Termination Notice Calculator 2026
Minimum termination notice in Manitoba: 8 weeks maximum, qualifying 30 days (about 1 month). Calculate what you are owed.
New Brunswick Termination Notice Calculator 2026 | TNAADO
Minimum termination notice in New Brunswick: 4 weeks maximum, qualifying 6 consecutive months. Calculate what you are owed.
Newfoundland & Labrador Termination Notice 2026 | TNAADO
Minimum termination notice in Newfoundland and Labrador: 6 weeks maximum, qualifying 3 consecutive months. Calculate what you are owed.
NWT Termination Notice Calculator 2026
Minimum termination notice in Northwest Territories: 8 weeks maximum, qualifying 90 days (about 3 months). Calculate what you are owed.
Nova Scotia Termination Notice Calculator 2026 | TNAADO
Minimum termination notice in Nova Scotia: 8 weeks maximum, qualifying 3 consecutive months. Calculate what you are owed.
Nunavut Termination Notice Calculator 2026
Minimum termination notice in Nunavut: 8 weeks maximum, qualifying 90 days (about 3 months). Calculate what you are owed.
Ontario Termination Notice Calculator 2026
Minimum termination notice in Ontario: 8 weeks maximum, qualifying 3 consecutive months. Calculate what you are owed.
PEI Termination Notice Calculator 2026
Minimum termination notice in Prince Edward Island: 8 weeks maximum, qualifying 90 days (about 3 months). Calculate what you are owed.
Quebec Termination Notice Calculator 2026
Minimum termination notice in Quebec: 8 weeks maximum, qualifying 3 consecutive months (3 mois de service continu). Calculate what you are owed.
Saskatchewan Termination Notice Calculator 2026 | TNAADO
Minimum termination notice in Saskatchewan: 8 weeks maximum, qualifying 13 consecutive weeks (about 3 months). Calculate what you are owed.
Yukon Termination Notice Calculator 2026
Minimum termination notice in Yukon: 8 weeks maximum, qualifying 6 consecutive months. Calculate what you are owed.
Added September 25, 2026 · 15 new tools
CPP Survivor Pension & Death Benefit Calculator | TNAADO
Free CPP survivor's pension and death benefit calculator: estimate the monthly pension (under 65 or 65+) and the 2026 death benefit.
GIS Calculator (Guaranteed Income Supplement)
Free GIS calculator. Estimate your Guaranteed Income Supplement for the July-September 2026 quarter, by marital/spouse-OAS status and income.
RRSP Over-Contribution Penalty Calculator
Free RRSP over-contribution penalty calculator. Estimate the CRA's 1% per month Part X.1 tax on excess RRSP contributions above the $2,000 lifetime…
TFSA Contribution Room Calculator Since 2009
Free TFSA contribution room calculator. Find your cumulative room since 2009 using the actual CRA year-by-year dollar limit table.
Student Loan RAP Checker: $0 Payment Canada
Free Canada Student Loan Repayment Assistance Plan (RAP) checker. See whether your family income qualifies for a $0 monthly payment, by family size.
Mortgage Penalty Calculator: IRD vs 3 Months
Free mortgage prepayment penalty calculator. Estimate the FCAC-documented greater of 3 months' interest or interest rate differential (IRD).
CRA Payroll Remittance Frequency: Remitter Type | TNAADO
Find your CRA payroll remitter type from average monthly withholding (AMWA): quarterly, regular or accelerated, with the real due dates.
T4/T4A Filing Deadline & Late Penalty Calculator | TNAADO
Find your exact T4/T4A filing deadline and estimate the CRA late-filing penalty by number of slips and days late. Free, in your browser.
Corporate Tax Instalment Calculator (CRA)
Check whether your corporation owes CRA instalments (the $3,000 threshold), whether it is an eligible small CCPC for quarterly payments, and estimate…
GST/HST Filing Frequency Determiner
Find your CRA-assigned GST/HST reporting period from your real revenue: annual under $1.5M, quarterly up to $6M, monthly above that. Also flags the…
Incorporation Fees Canada: Federal & Provincial | TNAADO
Compare government incorporation filing fees: federal (Corporations Canada) vs all 10 provinces and 3 territories, each fee sourced and flagged.
EI Maternity & Parental Benefits Calculator
Free federal EI maternity and parental benefits calculator. Estimate weekly rate and total for maternity, standard parental (55%) and extended…
Non-Resident Withholding Tax Calculator (Part XIII) | TNAADO
Calculate the CRA Part XIII 25% withholding tax on dividends, interest, rent, royalties or fees paid to a non-resident, with the arm's-length…
Used Vehicle Private Sale Tax Calculator
Free used vehicle private sale tax calculator for all 10 Canadian provinces. Real RST/PST/QST rates and the greater-of-price-or-wholesale-value rule…
IRCC Application Fees: PR, Citizenship, Permits | TNAADO
Look up current IRCC fees for permanent residence, citizenship, work and study permits, visitor visas and biometrics, read off IRCC's own fee…
Added September 24, 2026 · 26 new tools
Small Claims Court Limit by Province
Small claims court monetary limit and base filing fee for every Canadian province and territory, each sourced from that jurisdiction's own site.
RQAP / QPIP Calculator: Quebec Parental Benefit | TNAADO
Estimate your Quebec Parental Insurance Plan (RQAP/QPIP) benefit: Basic vs Special Plan, with the real 2026 rates and maximum insurable earnings.
Disability Tax Credit (DTC) Eligibility Estimator | TNAADO
Estimate whether you may qualify for the Disability Tax Credit against CRA's real checklist, and the potential federal and Ontario credit value.
GST/HST Registration Threshold Checker ($30,000) | TNAADO
Do you have to register for GST/HST? Enter quarterly revenue and test it against CRA's $30,000 small-supplier rule (single-quarter and four-quarter…
CRA Tax Instalment Calculator: Do You Owe?
Do you have to pay CRA instalments? Check the $3,000 net-tax-owing rule ($1,800 in Quebec) and estimate your quarterly instalment.
Quebec Family Allowance Calculator
Estimate Quebec's Allocation famille (Family Allowance): the per-child amount and single-parent supplement paid by Retraite Québec, on top of…
Self-Employed CPP & QPP Contribution Calculator | TNAADO
Freelancer and gig-worker CPP/QPP calculator. Quebec residents pay QPP at a higher rate than CPP, not the flat CPP rate other tools assume.
Bank Institution & Transit Number Lookup Canada | TNAADO
Free Canadian bank institution number lookup and routing validator. Find the bank behind a 3-digit institution number and check the 9-digit EFT…
Canada Business Number (BN) Validator: Check BN Format
Check a CRA Business Number instantly: 9 digits plus a program account like RT0001. See what RT, RP, RC, RM, RR and RZ mean. Free, private, runs in…
Canada Dental Care Plan (CDCP) Eligibility Checker | TNAADO
Check your Canada Dental Care Plan coverage tier: 100%, 60% or 40% of eligible costs by adjusted family net income, plus insurance and filing gates.
EI Sickness Benefit Calculator 2026
Estimate 2026 EI sickness benefits: weekly rate at 55% of insurable earnings and the real 26-week maximum — a different, longer entitlement than EI…
ISBN-10 / ISBN-13 Check-Digit Validator
Free ISBN check-digit validator and converter. Verifies the real ISO 2108 mod-11 (ISBN-10) and EAN-13 mod-10 (ISBN-13) checksums, and converts…
Passport MRZ Check-Digit Validator
Free passport MRZ validator. Checks the real ICAO Document 9303 machine-readable-zone check digits for document number, birth date, expiry date, and…
Vehicle Safety Inspection Rules by Province
Do you need a safety inspection to sell, buy or import a used car? Requirements, cost range and frequency for all 13 provinces and territories.
VIN Check-Digit Validator
Free VIN check-digit validator for Canada and North America. Verifies the real ISO 3779 / 49 CFR 565 position-9 checksum and reads the model-year…
CLB Score Converter: IELTS & CELPIP to CLB
Convert IELTS General Training or CELPIP-General scores to Canadian Language Benchmark (CLB) levels per skill, using IRCC's official table. Free…
Express Entry CRS Calculator 2026: Score Points | TNAADO
Score your CRS points for Express Entry: core factors, spouse factors, skill transferability and additional points, using IRCC's official tables…
Family Sponsorship Income Calculator (LICO)
Find the minimum income (LICO) to sponsor parents or grandparents to Canada, and see why spousal sponsorship has no income requirement. Free, private.
NOC 2021 Code Lookup: Find Your TEER Category
Search the National Occupational Classification (NOC) 2021 for your occupation's 5-digit code and TEER category. All 516 official unit groups, free.
Physical Presence Calculator: Citizenship & PR | TNAADO
Work out physical presence days for Canadian citizenship (1,095 days) or PR card renewal (730 days) with IRCC's own day-counting and pre-PR credit…
Age of Majority by Province
The legal age of majority for every Canadian province and territory — 18 or 19 — with the exact Age of Majority Act that sets it.
Limitation Period by Province: How Long to Sue | TNAADO
How long you have to sue in Canada, by province and territory: basic and ultimate limitation periods under each Limitations Act, sourced and dated.
Probate Fee Calculator by Province
Estimate probate/estate certificate fees for any Canadian province or territory: enter an estate value and see each jurisdiction's own fee formula…
Ontario Last Month's Rent Interest Calculator
Free Ontario last month's rent deposit interest calculator: the simple annual interest a landlord owes under RTA s.106(6), year by year at each…
Ontario Rent Increase Calculator 2026 (2.1%)
Free Ontario rent increase guideline calculator. Applies the 2.1% guideline for 2026 to your rent and flags units exempt from the cap. In your…
Landlord & Tenant Board Filing Fees by Province | TNAADO
What it costs to file with your province's tenancy tribunal (Ontario LTB, BC RTB, Alberta RTDRS, Manitoba, Quebec TAL and more), for landlords and…