General Calculators

Pomodoro Cycle Calculator

Pomodoros, breaks, total time and finish time for a task

Book Reading Time Calculator

Hours and days to finish a book from its length and your reading speed

Time Block Planner

A day schedule from task lengths, a start time and a buffer

Task Estimate With Buffer Calculator

Three-point (PERT) estimate with 90% and 95% ranges and a flat buffer

Deep Work Hours Calculator

Focused hours left in your week after meetings, admin and overhead

Calendar Free Slot Finder

Open gaps in a day from your busy times, private in your browser

Cheque Amount in Words

Write a dollar amount in words with the xx/100 cents line for a cheque.

Skincare Ingredient Conflict Checker

Can you use retinol with vitamin C? Pairwise matrix and AM/PM split

Skincare Cost Per Use Calculator

Cost per application, month and year for each product, plus money lost past the PAO

Perfume Sprays Per Bottle and Cost Per ML Calculator

Sprays in a 30, 50 or 100 ml bottle, cost per ml, per spray and per wear

Perfume Dilution Calculator

ml of fragrance concentrate and alcohol for a target strength, or how much to add to dilute

Perfume Decant vs Full Bottle Calculator

Price per ml of a decant or sample against the full bottle, the markup, and the break-even number of decants

Perfume Bottle Size Value Calculator

Compare 30, 50 and 100 ml bottles by price per ml, months to finish and price per ml you actually use

Perfume Gift Set Value Calculator

Set price against buying every item separately and against only the items you would buy anyway

Perfume Size ml to oz Converter

Perfume ml to fluid ounces and back, common bottle sizes and the 100 ml / 3.4 oz carry-on check

Candle Burn Time Calculator

Hours a candle burns from its wax weight and a burn rate you measure, with cost per hour and 3-hour sessions

Perfume Travel Amount Calculator

ml of perfume for your trip, the travel atomizer size to pack and a TSA carry-on and checked-bag size check

Perfume Collection Finish Time Calculator

Years to finish all your bottles at your use, and how many ml may be left past your keep time

Fragrance Layering Spray Planner

Split your usual sprays across two or three scents by ratio, with ml used and wears per bottle

Perfume Cost Per Hour Calculator

Cost per wear and per hour of scent for one or two perfumes, and hours a monthly budget buys

DIY Cosmetic Formula Scaler

Percent-by-weight recipe to grams for any batch size, or grams back to percent

SPF Percentage Calculator

Share of sunburn-causing UV let through at SPF 15, 30, 50 or 100, and two SPFs compared

Laser Hair Removal Session Planner

Every laser hair removal appointment date and the total course cost

Waxing Schedule Planner

Next wax dates from regrowth, the retinol pause date and yearly cost

Self-Tan Fade Planner

When to apply a self-tan or spray tan for an event and when it fades

Tattoo Healing Timeline Planner

Dated tattoo aftercare calendar from week one to the two-month mark

Ear Gauge Size Converter

Gauge to mm and inches, or mm to the nearest gauge, with a 20g to 00g chart

Ear Stretching Schedule Planner

Dated one-gauge steps from your size to your target, with mm added each step

Shower and Bath Cost Calculator

Cost of one shower or bath in water and heating, and per year

Hair Removal Cost Comparison Calculator

Razor, wax, laser and home device cost compared year by year

Manicure and Pedicure Cost Calculator

Manicure and pedicure cost per year and month with tip and breaks

Gel Manicure Cure Time Planner and Timer

Layer timeline and countdown from your polish label cure times

Hair Growth Goal Calculator

Months and date to reach a goal hair length, with trims and a length table

Salon Tip Calculator

Tip per service and per stylist, before or after tax, with optional round-up

Braiding Hair Packs Calculator

Packs of braiding hair to buy from a test braid, with spare hair and cost

FPS to Frame Time Calculator

Milliseconds per frame from FPS and back, with a frame budget check

TV Viewing Distance Calculator

Seating distance for a TV size at the 30 and 40 degree viewing angles, plus 1080p, 4K and 8K pixel distances

TV Size for Viewing Distance Calculator

The TV diagonal that fills a 30 or 40 degree view from the distance you sit

Pixel Density (PPI) Calculator

Pixels per inch and dot pitch in mm from screen size and resolution, with the pixel-blend distance

Screen Width and Height from Diagonal

TV and monitor width and height in inches and cm from the diagonal and aspect ratio, with a furniture-fit check

Projector Screen Size from Throw Distance

Projector image width, height and diagonal from throw distance and the throw ratio or zoom range

Projector Throw Distance Calculator

How far back to place a projector for a target image width, from its throw ratio or zoom range

Projector Lumens vs Screen Size

Screen brightness in foot-lamberts and nits from lumens, screen width and gain, against the 16 fL cinema figure

Monitor Distance and FOV Calculator

Horizontal and vertical field of view of a monitor at your desk distance, and the distance for a 30 or 40 degree view

OS Scaling Effective Resolution

Effective resolution and logical DPI of a screen at 100 to 300 percent OS scaling, with a 125 to 200 percent table

Ultrawide vs Dual Monitor Width

Desk width, height and screen area of one ultrawide against two monitors side by side

Monitor Response Time vs Refresh Rate Calculator

Does the pixel response fit inside one refresh at 60, 144 or 240 Hz

Mouse Sensitivity Converter (CS2, Valorant, Apex, Overwatch 2)

Same cm per 360 across games, with eDPI and a custom yaw option

Game FOV Converter

Horizontal and vertical field of view for any aspect ratio, with Hor+ comparison

PC Power Supply Wattage Calculator

PSU size from CPU, GPU and other power plus headroom

Game Download Time Calculator

Download time from size in GB and speed in Mbps, with MB per second and data cap share

Game Library Storage Calculator

How many games fit on a 1 TB or 2 TB drive, and the size Windows will show

Elo Rating Change Calculator

Expected score and new ratings after a win, draw or loss

Win Rate Goal Calculator

Games needed to reach a target win rate, and straight wins required

Loot Box and Gacha Expected Cost Calculator

Expected pulls and spend from the drop rate and an optional hard pity

Bridal Beauty Timeline Calculator

Dated list of bridal trials, facials, lashes and nails counted back from the wedding day

Wedding Hair and Makeup Quote Calculator

Bride and bridesmaid hair and makeup total with trials, travel, tax, tip and deposit

Wedding Morning Hair and Makeup Schedule Calculator

Start time and chair order for a wedding party from the ready-by time and artist count

Prom and Event Getting Ready Schedule Calculator

What time to start hair, makeup and dressing, counted back from your leave time

Spa Day Cost Split Calculator

What each person pays for a group spa day with shared costs, add-ons, tax and tip

Group Salon Appointment Time Calculator

How long a group salon booking takes from guests, stylists and minutes per service

Makeup Travel Bag Size Calculator

Litres of bag your makeup needs, plus a check of liquids against the carry-on container limit

Press-On vs Salon Nails Cost Calculator

Cost per event, per year and break-even for press-on nails versus a salon manicure

Hair Dye Amount Calculator

Grams of colour and developer by hair length and density, tubes to buy, root touch-up amount

Hair Colour Correction Wheel

Colour that cancels orange, yellow, red or green hair, and the pigment at each lift level

Wig Size Calculator

Petite, average or large cap from your head circumference, with how to measure

Wig Cost Per Wear Calculator

Cost per wear, month and year, and two wigs compared

Outfit Combinations Calculator

Outfits your wardrobe makes from tops, bottoms, layers and shoes, and what one more piece adds

Capsule Wardrobe Size Calculator

Tops, bottoms and total pieces for your laundry cycle, against the 33-item Project 333 challenge

Fabric Shrinkage Allowance Calculator

Shrinkage percent from a wash swatch and the extra yardage to buy

Laundry Cost Per Load Calculator

Electricity, water and detergent per load, per week and per year, against the laundromat

Dishwasher vs Hand Washing Cost Calculator

Yearly electricity, water, detergent and optional time cost of each way to wash dishes

Robot Vacuum Payback Calculator

Payback months and net gain from time saved, upkeep and expected life

Water Softener Salt Usage Calculator

Days between regenerations, salt per year and cost from hardness, usage and capacity

Water Hardness Converter

ppm, mg/L and grains per gallon with the USGS hardness class

Cleaning Solution Dilution Calculator

Concentrate and water for a label ratio like 1:10, with never-mix-chemicals warnings

House Cleaning Time and Cost Calculator

Hours and cost to clean by square footage, deep or move-out, hired vs DIY

Thrift Flip Profit Calculator

Profit, margin, ROI, profit per hour and break-even price for a resale

Alter or Replace Calculator

Tailor quotes with tax and tip compared with a replacement by cost per wear

Closet Rod and Shelf Space Calculator

Rod length needed for hanging clothes, how many more fit, and shelf capacity

Paper Towels vs Reusable Cloths Cost Calculator

Monthly and yearly savings and break-even month for reusable cloths

Dry Cleaning vs Home Washing Cost Calculator

Cost per wear and yearly cost of dry cleaning against washing at home

Hair Extension Cost Calculator

Total grams, packs to buy, cost per strand and yearly cost with install fees

Heat Styling Temperature Guide

Conservative flat iron and curling iron temperature by hair type in C and F

Haircut Schedule Planner

Every haircut date for a year and what a year of cuts costs with tip

Root Touch-Up Timing Calculator

Weeks until roots or a relaxer need a touch-up, due date and yearly cost

Shampoo Cost Per Wash Calculator

Washes per bottle, weeks it lasts and cost per wash with conditioner

Sunburn Time Calculator

Minutes to first sunburn reddening from the UV index and Fitzpatrick skin type, with and without sunscreen

Nail Growth Calculator

Weeks and date to a goal nail length, and when a gel or acrylic fill gap reaches 2 mm

Fingertip Unit Cream Calculator

Fingertip units, grams and tubes of cream for the areas you treat, per application and per course

Skincare Routine Order Generator

Morning and evening layering order for your products, with acids and retinoids on separate nights

Skin Tone ITA Calculator

Individual Typology Angle, skin tone category, foundation depth and undertone from a hex colour

Fitzpatrick Skin Type Quiz

Ten questions, scored 0 to 40, to find your Fitzpatrick skin type I to VI

Skincare Active Dilution Calculator

Grams of serum and base to mix to a lower active percent, or the final percent of a blend

Eyelash Regrowth Calculator

Weeks for lashes to grow back and the gap an extension fill has to cover

Lash Extension Cost Per Year Calculator

Yearly cost of a lash extension set plus fills, from your prices, fill interval and tip

Lash Fill or New Set Calculator

Fill or full set from the share of extensions left, your salon's minimum and both prices

Lash Lift Schedule and Cost Calculator

The 4 to 6 week rebook window after a lash lift, next date and cost per year

Brow Tint and Lamination Calculator

Next brow tint and lamination dates and the yearly cost of each

Microblading Touch-Up Cost Calculator

Touch-up months and total cost of microblading over a number of years

Gel Polish Removal Time Calculator

Soak-off minutes for gel polish by method, a finish time and 7 days of cuticle care

Lash Serum Timeline Calculator

Week-by-week share of Latisse users with a lash gain, from the US label

Kids Shoe Size Chart Calculator

Foot length to US, UK and EU kids shoe size, with growing room and a full 1C to 6Y chart

Watch Band Size Calculator

Wrist size to strap length, Apple Watch Sport Band size and the case diameter that suits

Men's Pants and Jeans Size Converter

Waist in inches or cm to US, UK and EU pants size, letter size and inseam in cm

Belt Size Calculator

Pants waist to belt size, EU cm size and the waist range a belt fits, or size from a belt you own

Swimwear Size Converter

Bust and hip measurements to separate top and bottom sizes in US, UK, EU and AU

Wedding Dress Size Calculator

Bust, waist and hip measurements to the dress size to order, and why it can run bigger than your everyday size

Dress Shirt Collar and Sleeve Size Calculator

Neck and arm measurements to collar size, sleeve length, EU size and S, M, L

Suit Jacket Size Calculator

Chest and height to jacket size and length (short, regular, long), EU size and trouser waist

Necklace, Bracelet and Anklet Length Calculator

Wrist, neck or ankle size to snug, standard and loose chain lengths, with named necklace styles

Dog Crate Size Calculator

Crate length and height from your dog’s measurements, with the nearest standard size

Kennel Run Size Calculator: Floor Space Per Dog

Minimum floor area and height for a dog kennel run from the dog's length and head height.

Dog Bed Size Calculator

Bed size from nose-to-tail length and sleeping style

Puppy and Kitten Vaccine Schedule Calculator

Core vaccine, rabies and booster dates from a puppy or kitten birth date

Dog Chocolate Toxicity Calculator

Theobromine dose in mg/kg by weight, chocolate type and amount, with vet bands

Xylitol Toxicity Calculator for Dogs

Xylitol dose in g/kg from gum or sweetener eaten, with vet thresholds

Aquarium Volume Calculator

Tank gallons, litres and water weight from dimensions, fill level and substrate

Aquarium Stocking Calculator

How stocked your tank is from adult fish lengths, using a conservative inch-per-gallon rule

Pet Sitting Rate Calculator

Quote for visits and overnights with extra pets, holiday surcharge, tax and platform fee

Dog and Cat Pregnancy Due Date Calculator

Whelping or kitten due date and window from breeding or ovulation date

Soap Lye Calculator

NaOH or KOH and water for cold process soap from your oils, superfat and lye concentration, with safety steps

Soap Mold Volume Calculator

Grams of oil and batter that fill a soap mold of any size

Resin Mold Volume Calculator

Millilitres and grams of epoxy resin for a box, round, sphere or cone mold, with the resin and hardener split

3D Print Filament Cost Calculator

Filament, electricity and failed-print cost of a print from spool price, grams and print time

Filament Length to Weight Calculator

Metres to grams and back for 1.75 or 2.85 mm filament in PLA, PETG, ABS and more, with metres per kg

Cross Stitch Fabric Size Calculator

Finished design size, fabric to cut and minimum hoop from stitch count and Aida or evenweave count

Fabric Yardage Calculator

Yards or metres of fabric to buy for a list of rectangular pieces, with seam allowance and extra

Knitting Gauge Calculator

Cast-on stitches and rows from your swatch, rounded to a stitch multiple, and the effect of a different gauge

Even Increase and Decrease Calculator

Space knitting or crochet increases and decreases evenly with the exact repeat to work

Print Farm Profit Per Hour Calculator

Profit per plate, per printer-hour and per month for a 3D printing business, with break-even price

Resin 3D Print Cost Calculator

Resin, wash liquid, consumables, power and failed-print cost of an SLA or MSLA resin print

3D Printer Bed Size Fit Calculator

Whether a part fits your build volume, which way to orient it and how many copies fit on one plate

Laser Cutting Time Calculator

Cut, travel and raster engraving time for a laser job from path length, speed and passes, with batch time and cost

Laser Kerf Compensation Calculator

Size to draw for a laser-cut part or hole after kerf, the path offset per side, and kerf from a test cut

CNC Feeds and Speeds Calculator

Spindle RPM and feed rate from cutter diameter, flutes, surface speed and chip load, metric or imperial

CNC Material Removal Rate Calculator

Material removal rate from stepover, depth and feed, plus roughing time for a pocket

E-Steps Calibration Calculator

New extruder E-steps per mm from a 100 mm extrusion test, with the M92 command

Steps Per mm Calculator

Steps per mm for a belt, lead screw or extruder axis from motor steps, microstepping and mechanics

3D Print Volumetric Flow Calculator

Flow in mm3/s from line width, layer height and speed, and the top print speed for a hotend limit

Nozzle Layer Height Calculator

Maximum layer height for a nozzle, layers in a model and how other layer heights change the count

Baby Formula Amount Calculator

Ounces and mL of formula per day and per bottle by weight and age

Baby Formula Cost Calculator

Formula cost per day, month and year from tin price, yield and daily intake

Diaper Cost Calculator

Cost per diaper, month and year, with two packs compared side by side

Breast Milk Storage Calculator

Use-by time for pumped, refrigerated, frozen and thawed breast milk (CDC)

Child Height Prediction Calculator

Target adult height for a boy or girl from the parents' heights, with the likely range

Car Seat Stage Calculator

Rear-facing, harness, booster or seat belt by age, weight and height, with Canadian provincial rules

Childcare Cost Split Calculator

Split daycare costs between two parents equally, by income or by percentage

Kids Allowance Calculator

Weekly allowance by age and what each child earns per hour of chores

Kids Activity Cost Calculator

Yearly and monthly cost of sports, lessons and clubs with the cost per session

Tutoring Cost Calculator

Tutoring cost per session, month and school year, with a second rate to compare

Childcare Cost Per Hour Calculator

Real cost per hour of daycare, a nanny or after-school care, side by side

School Lunch Cost Calculator

Packed vs bought school lunch cost per year for one or more kids

Birthday Party Cost Calculator

Total party cost with the cost per child guest and per guest

Family Grocery Budget Calculator

USDA food plan cost per person and per family by age, in US dollars

Flight Arrival Time Calculator

Local landing time and date from a departure time, flight duration and the two time zones

Time Difference Between Cities Calculator

Hour difference and converted time between two cities on a chosen date, with daylight saving

Layover Connection Time Calculator

Real layover length across time zones, checked against the minimum connection time you enter

When To Leave For The Airport Calculator

Leave-home time worked back from your flight time, airport arrival buffer, travel time and extras

Road Trip Cost Split Calculator

Total road trip cost and the per-person split: fuel, tolls, lodging, food and extras

Drive Time Calculator With Breaks

Total drive time and arrival time from distance, average speed, rest breaks and stops

Schengen 90/180 Day Calculator

Days used and left under the Schengen 90 days in any 180 rule, and the longest stay from a planned entry date

Passport Validity Calculator

Checks a passport expiry date against the 3 or 6 month validity rule for a trip, including the Schengen 10-year issue rule

Per Diem Calculator

Total per diem for a trip from dates, daily M&IE and lodging rates, with first and last day at 75%

Junk Silver Melt Value Calculator

Troy ounces and melt value of 90% and 40% silver US coins from the spot price you enter

Scrap Gold Value Calculator

Pure gold and melt value by karat and weight, with a dealer payout estimate

Karat to Purity Converter

Percent gold and fineness stamp (585, 750) from a karat, or karat from a stamp

Gold Price Per Gram by Karat Calculator

Value of a gram and a pennyweight of 24k to 8k gold from the spot price you enter

Carat to Grams Converter

Carats to grams, milligrams, pennyweight and momme, and back

Troy Ounce to Grams Converter

Troy ounces, pennyweight, troy grains, grams and kilograms

Sterling Silver Value Calculator

Pure silver and melt value of 925 sterling by weight, with a payout estimate

Pearls Per Strand Calculator

Pearl count for a strand length and size, or the length for a number of pearls

Gold Alloy and Karat Mixing Calculator

Fine gold and alloy in a piece, and the karat when you melt pieces together

Diamond Price Per Carat Calculator

Total or per-carat price for a stone, and two stones compared

Bullion Premium Over Spot Calculator

Premium over spot in dollars and percent, all-in price per ounce and break-even spot

Trading Card Grading ROI Calculator

Expected value of grading a card against selling raw, with break-even top-grade odds

Pours Per Bottle and Cost Per Glass Calculator

Pours per bottle, cost per pour and menu price for wine, whisky and spirits

Whisky Dilution Calculator

Water to add for a target ABV, or the ABV after adding water, with proof

Stamp Perforation Gauge Calculator

Perforation gauge from a hole count and measured length, with compound perf labels

Shelf Space Calculator

Items per shelf and shelves needed for books, records or comics from a measured stack

Gold Silver Ratio Calculator

Gold to silver ratio from spot prices, with a swap-and-back model

Half-Square Triangle Size Calculator

Cut size of squares for half-square triangles from the finished size, with the exact value and the next 1/8 inch

No-Waste Flying Geese Size Calculator

Large and small square sizes that make four flying geese units, from the finished width

Precut Squares Quilt Size Calculator

Packs of charm squares, layer cakes or mini charms for a quilt size, or the size your packs make

Quilt Layout Calculator: Blocks, Sashing and Borders

Finished quilt size, sashing and cornerstone counts, and border lengths from blocks across and down

Squares Per Yard of Fabric Calculator

Strips and yardage for a number of squares of a cut size, or the squares a yardage cuts

Decimal Inches to Fraction Converter

Nearest 1/2 to 1/64 inch fraction for a decimal, with round-up values, error and millimetres

Pattern Enlargement Percentage Calculator

Copier or print percentage to resize a pattern, with area change and passes for a limited copier

Continuous Bias Binding Fabric Calculator

Size of the fabric square for a length of continuous bias binding, with flat-piece yardage

Ruffle and Gathered Fabric Calculator

Gathered strip length, strips across the fabric and yardage for a ruffle at 1.5x to 3x fullness

Shared DNA Centimorgan Calculator

Average and range of shared cM for each relationship, and the relationships a DNA match could be

Ancestors per Generation Calculator

Number of ancestors in each generation, their names, running total and average DNA share

Generations to Years Calculator

Years to generations, and the estimated birth year of an ancestor from your birth year

Census Age to Birth Year Calculator

Birth date window from a census age, with England and Wales and US census dates and the 1841 rounding rule

Birth Date from Age at Death Calculator

Birth date or window from the date of death and the age on a gravestone, in years, months and days

Old Style New Style Date Converter

Julian to Gregorian dates with the 25 March year start and double dates used in Britain before 1752

Roman Numeral Year Converter

Read years on gravestones and monuments in Roman numerals, or write any number from 1 to 3999

Party Food Per Guest Calculator

Appetizer and finger-food pieces per guest by event type and length, total and per dish

Party Drinks and Ice Calculator

Non-alcoholic drinks per guest by hour, split into water, pop and juice, plus bags of ice

Party Cake Servings Calculator

Servings from round, tiered or rectangular cakes for your slice size, and the cake size for a guest count

Party Pizza Quantity Calculator

Pizzas to order for adults and kids by slices per person, with a vegetarian split and cost

BBQ Meat Per Person Calculator

Raw meat to buy per person for a barbecue, split into burgers, sausages, chicken and steak

Banquet Table Seating Calculator

Seats per round or rectangular table, tables and chairs needed, and floor space for a guest count

Buffet vs Plated Dinner Cost Calculator

Total and per-guest cost of a buffet versus a plated dinner, with servers, service charge and tax

Party Budget Split Calculator

Split a total party budget across venue, food, drinks, decor and more, with cost per guest

Kids Party Timeline Planner

Clock-time schedule for a kids party from arrival to pickup, with setup start and time to spare

Reading Speed Calculator (WPM)

Words per minute (WPM) from a timed read

Book Finish Date Calculator

Pages per day to finish a book by a deadline, or the finish date at your pace

Spaced Repetition Schedule Calculator (SM-2)

Flashcard review intervals and dates from your recall ratings

Study Hours Per Credit Hour Calculator

Class and out-of-class hours per week and term from the federal credit-hour definition

Language Learning Hours Calculator (FSI)

Weeks and date to reach the FSI hours for a language group at your study pace

German Grade Converter (Bavarian Formula)

Convert a foreign grade or percentage to a German grade from 1.0 to 4.0

GPA Needed to Raise Cumulative GPA

The GPA you need next term to reach a target, or the credits it would take

Drop Lowest Grade Calculator

Average before and after dropping your lowest quiz or homework scores

Grade Curve Calculator

Curve test scores by adding points, scaling the top score, square root or bell curve

Class Average Calculator

Mean, median, mode and standard deviation of a set of test scores, with pass rate

Item Analysis Calculator

Item difficulty, discrimination index (top and bottom 27%) and KR-20 from a 1 and 0 grid

KR-20 Calculator

Kuder-Richardson reliability from item difficulties and the spread of total scores

Letter Grade Scale Builder

Your own percent cutoffs, with the minimum points for each letter on any total

Rubric Score Calculator

Rubric points to a percentage, by total points or by criterion weights

Standards-Based Grade Calculator

Mean, median, mode, most recent and decaying average for one standard

Attendance Percentage Calculator

Attendance rate from days enrolled and absent, with the 10% chronic absence line

Clay Shrinkage Calculator

Wet-to-fired size for pottery, with drying and firing shrinkage combined correctly.

Picture Frame Mat Calculator

Mat window size and border widths for any artwork in any frame, including bottom weighting.

Photo to Canvas Print Calculator

How much of your photo a canvas crops, its ppi, and the largest canvas it supports.

Canvas Stretching Size Calculator

Canvas fabric to cut for stretcher bars, with roll length and cost for several pieces.

Mural Grid Calculator

Grid square size on the print and on the wall, with column, row and line counts for enlarging a drawing.

Paint Mixing Ratio Calculator

Convert a paint recipe in parts into exact amounts for any total, or scale from one colour you already have.

Gesso and Varnish Amount Calculator

How much gesso, varnish or sealer a canvas or panel needs from its size, coats and the label coverage.

Watercolour Palette Cost Calculator

Total cost, cost per mL and cost per painting for a palette of watercolour tubes.

Pet Lifetime Cost Calculator

Lifetime cost of a dog or cat from your own yearly costs, lifespan and inflation

Pet Insurance vs Savings Calculator

Break-even vet bill for pet insurance from premium, deductible, reimbursement and limit

Pet Food Cost Per Day Calculator

Daily, monthly and yearly pet food cost from bag price, bag weight and daily amount

How Long Will a Bag of Pet Food Last

Days a bag of dog or cat food lasts from bag weight and daily amount, with run-out and reorder dates

Annual Vet Budget Calculator

Yearly and monthly vet budget for a dog or cat from exams, vaccines, prevention, dental and an emergency set-aside

Pet Boarding vs Pet Sitter Cost Calculator

Compare a kennel’s nightly rate with a sitter’s visit rate for your trip, with extra pets, fees and tip

Dog Grooming Cost Per Year Calculator

Yearly dog grooming cost from price, tip, add-ons and visits, with a home grooming payback comparison

Dog Walker Cost Per Walk Calculator

Dog walker cost per walk, week, month and year, with tip, extra dogs and a package comparison

Pet Emergency Fund Calculator

Months to build a pet emergency fund, or the monthly deposit needed to reach it by a date

Pool Volume Calculator

Gallons and litres in a pool or hot tub

Percentage

Calculate percentages easily

Tip Calculator

Calculate tips and split bills

Currency Converter

Convert between currencies

Historical Exchange Rate Calculator

Convert CAD at a past Bank of Canada rate

Unit Converter

Convert measurement units

Age Calculator

Calculate exact age

Date Calculator

Days between dates

GPA Calculator

Calculate grade point average

BMI Calculator

Calculate Body Mass Index

Inflation Calculator

Calculate purchasing power over time

Savings Goal

Plan savings targets

Budget Planner

Plan your monthly budget

Emergency Fund

How much to save for emergencies

Evacuation Time Planner

Plan how long it takes to leave in an emergency

Education Cost

Plan education expenses

Wedding Budget

Plan wedding expenses

Baby Cost

Estimate first-year baby costs

Estate Planning

Plan estate distribution

Roommate Rent Split Calculator

Split rent by room size, income or equal share

Small Claims Court Limit

Monetary limit and filing fee by province

Circle Skirt Fabric

Waist radius, cut layout and yardage

Yarn Yardage Calculator

Skeins needed, partial ball yardage, weight swap

Shaving Cost Per Year Calculator

Cost per shave, month and year from blade price, shaves per week and blade life

Safety Razor vs Cartridge Savings Calculator

Yearly savings and months until a safety razor pays for itself

Beard Oil Dilution Calculator

Essential oil drops and carrier ml for any bottle size, with a facial-safe ceiling

Beard Balm Recipe Calculator

Grams of beeswax, butter, carrier oil and essential oil for any beard balm batch

Minoxidil Bottle Duration Calculator

Days a bottle lasts at the dose you enter, run-out date and cost per month

Hair Shedding Count Tracker

Average, median and week-on-week trend of your daily shed-hair counts

DIY Haircut Savings Calculator

Barber cost per year, clipper payback in cuts, and 5 and 10 year savings

Personal Care Budget Calculator

Monthly, yearly and share-of-income cost of every grooming item

52 Week Savings Challenge Calculator

Week-by-week deposit schedule and total for a 52 week savings challenge, ascending, descending or random.

365 Day Savings Challenge Calculator

Daily deposit, month-end totals and year total for a 365 day savings challenge that rises each day.

100 Envelope Challenge Calculator

Total, per-envelope amount and weekly pace for the 100 envelope savings challenge, or work back from a goal.

Round-Up Savings Calculator

Spare change saved per week, month and year by rounding purchases up to the next dollar, with optional multiplier and interest.

No-Spend Challenge Tracker

Days kept, success rate, money not spent and slips left in a no-spend challenge.

Sinking Fund Calculator

Monthly and per-paycheck amount to set aside for each upcoming expense, and the total across all sinking funds.

Paycheck Budget Split Calculator

Split each paycheck into needs, wants and savings with the 50/30/20 rule or your own percentages.

Coin Jar Counter

Total dollar value of the Canadian or US coins you count, with coin total and progress toward a goal.

Savings Goal By Date Calculator

How much to save each week, two weeks, twice a month or month to reach a goal by a date, with optional interest.

Hair Porosity Test Result Interpreter

Turn float test and strand feel answers into low, normal or high hair porosity with care tips.

Hair Wash Frequency Suggester

Guidance range for how often to wash wavy, curly or coily hair, adjusted for activity, with your next wash date.

Loc Retwist Schedule Calculator

How often to retwist locs by phase, when the next retwist is due, and the yearly cost with tip.

Protective Style Rotation Planner

Install, takedown and rest dates for rotating braids, twists and other protective styles, with a wear-time check.

Hair Length Retention Tracker

Compare actual length gained with half an inch a month of average growth to see retention and breakage.

Curl Pattern Quiz (2A to 4C)

Match your hair to the 2A to 4C curl pattern chart descriptions and get your closest type with care notes.

RAID Calculator

Usable capacity, space lost and fault tolerance for RAID 0, 1, 5, 6, 10, JBOD and SHR-style layouts.

RAID Rebuild Time Calculator

Estimated hours or days to rebuild a replaced RAID drive from its size, rebuild speed and how busy the array is.

RAID Rebuild URE Risk Calculator

Probability of at least one unrecoverable read error while rebuilding RAID 5, RAID 6 or a mirror, from the drive URE rate.

3-2-1 Backup Storage Calculator

Space needed for full plus incremental backups and for all three copies in a 3-2-1 backup plan.

Backup Window Calculator

Backup time from data size and effective bandwidth, and how much data fits in a backup window.

SSD Endurance Calculator

Years of SSD life from its TBW or DWPD rating and your average daily writes.

Hard Drive Cost per TB Calculator

Total cost of ownership per TB for a hard drive: purchase price plus electricity over the years you run it.

Cloud Backup vs NAS Break-Even Calculator

Month when buying a NAS becomes cheaper than paying a cloud backup price per TB each month.

Photo and Video Library Growth Calculator

How fast a photo and video library grows from files per month and average size, and when it fills a drive.

Drive Failure Rate to Array Failure Probability Calculator

From a drive annualized failure rate to the chance that too many drives in an array fail over a number of years.

Utility Bill Splitter

Split an electricity, water or gas bill between roommates equally, by days present or by usage, with fixed charges shared evenly.

Roommate Bill Split When Someone Moves In or Out

Split a shared bill by the day when roommates move in or out part-way through the billing period.

Grocery Receipt Splitter

Split a shared grocery receipt item by item, ticking who shares each one, with tax shared in proportion.

Who Owes Whom Calculator

Net each person balance and find the fewest payments that settle a group, an exact minimum for up to 8 people.

Roommate Security Deposit Split Calculator

Share a returned security deposit between roommates after deductions, charged equally, by amount paid in or to one tenant.

Split Bills by Income Calculator

Split rent and household bills in proportion to take-home pay (60/40, 70/30) or so everyone keeps equal money left over.

Group Trip Cost Splitter

Split trip or event costs when people attend for different days, with per-expense payer and exclusions, then settle up.

Utility Bill Split by Square Footage and Occupants

Split one shared utility bill between units or rooms by floor area, number of occupants or a blend of both.

Clipper Guard Size Converter

Guard number to inches and millimetres, or the nearest guard for a length

Lip Balm Recipe Calculator

Beeswax, butter and oil grams from a 1:3 to 1:5 ratio, plus tubes per batch

Lotion Bar Recipe Calculator

Beeswax, butter, oil and essential oil grams for a lotion bar batch, with bars per batch

Sugar Scrub Recipe Calculator

Sugar, carrier oil and essential oil grams from a ratio, with jar count

Bath Bomb Recipe Calculator

Baking soda, citric acid and other ingredients in grams for any number of bath bombs

DIY Lotion Recipe Calculator

Water, glycerin, emulsifying wax, oil and preservative grams by phase

Cosmetic Preservative Amount Calculator

Grams of preservative from batch weight and usage rate, with ranges and heat limits

DIY Jar Fill and Batch Size Calculator

How many jars a batch fills after waste, or the batch to make for a number of jars

DIY vs Store-Bought Cost Per Ounce Calculator

Cost per ounce of homemade vs store-bought, saving per batch and equipment payback

Makeup Cost Per Wear Calculator

Cost per wear for each makeup product, with the wears it needs to reach your target

Beauty Subscription Box Value Calculator

Real saving per beauty box from the products you would use, with break-even use share

Drugstore vs Luxury Skincare Savings Calculator

Price per ml, yearly cost and saving from swapping luxury skincare for drugstore

Eye Makeup Replacement Cost Calculator

Yearly cost of replacing mascara and eye makeup on schedule against your current habit

Travel Toiletry Kit Size Calculator

How much of each toiletry to pack and how many 100 ml carry-on containers it takes

Dermatologist Visit Cost Per Year Calculator

All-in yearly cost of dermatology: visits, prescriptions, procedures, travel and time

Gel Manicure Salon vs At-Home Calculator

Yearly cost of gel manicures at the salon or at home, and the kit break-even

Facial and Spa Membership vs Pay-Per-Visit Calculator

Whether a facial or spa membership beats paying per visit, with break-even visits

Moving Box Calculator

How many boxes you need by home size, by box type, with an optional cost from your own prices

Moving Truck Size Calculator

Truck size from home size or the volume and weight of your belongings, using U-Haul figures

Moving Labor Cost Calculator

Hired movers: crew rate, billable hours, minimum, fees and tip from your own quote

Moving Truck Fuel Cost Calculator

Fuel for a rental truck by truck size, distance and pump price, with fill-ups

Cost of Living Comparison Calculator

Percent change in monthly costs and the income that keeps up, from your own numbers

Moving Checklist Timeline and Countdown

Days until your move and a dated checklist, including utilities and change of address

Storage Unit Size Calculator

The smallest standard unit for your belongings by volume or truck load, with U-Haul unit descriptions

Move-In Cost Calculator

Cash needed to move into a rental: rent, deposits, fees, movers and supplies

Prorated Rent Calculator

Rent for a partial month by actual days, a 30-day month or a 365-day year

Term vs Whole Life Cost Calculator

Term and whole life premiums over time, and the invested difference against cash value

Home Insurance Replacement Cost Calculator

Rebuild cost from square feet and your cost per square foot, compared with your dwelling limit

Home Insurance 80% Rule Calculator

Claim payout and penalty when dwelling coverage is below 80% of replacement cost

Insurance Deductible Break-Even Calculator

Yearly saving, years to break even and break-even claim chance for two deductibles

Disability Insurance Needs Calculator

Monthly disability benefit needed, the gap against what you have and waiting-period cash

Umbrella Insurance Needs Calculator

Umbrella limit in $1 million steps from net worth and existing liability limits

Insurance Premiums as a Percent of Income Calculator

Total insurance premiums as a share of gross and take-home income

Insurance Coverage Gap Calculator

Need versus coverage for life, disability, home and liability, with each shortfall

Extended Warranty Worth It Calculator

Expected payout against the plan price, and the break-even failure chance

Car Cost Per Km or Mile Calculator

Total cost of owning a car per year, per month and per km or mile from depreciation, finance, insurance, upkeep and fuel

Repair or Replace Car Calculator

Compare fixing and keeping your car with replacing it over a set number of years, plus the repair-to-value ratio

In-Home Care Cost Calculator

Monthly and yearly cost of in-home care from hours a week and an hourly rate, agency versus a private caregiver.

Care Hours Needed Calculator

Weekly hours of help from an ADL and IADL checklist, Katz and Lawton style. Descriptive planning aid, not a diagnosis.

Assisted Living vs Home Care Cost Calculator

Compare staying home with paid care against assisted living: monthly cost, multi-year total and break-even care hours.

Long-Term Care Insurance Break-Even Calculator

Premiums paid versus benefit pool, with a compound inflation rider, and the years of care to break even.

Sibling Caregiver Cost Split Calculator

Split elder care costs between siblings equally, by income, or after crediting unpaid caregiving time.

Aging-in-Place Home Modification Budget Calculator

Budget grab bars, a ramp, wider doorways and more from your quotes, with a 1:12 ramp length helper.

Adult Day Program and Respite Cost Calculator

Monthly and yearly adult day program and respite cost, with cost per hour of caregiver relief.

Elder Care Cost Inflation Projector

Project monthly care cost year by year from the care start age to 85 or later at a growth rate you choose.

Home Equity Care Funding Runway Calculator

How many months home equity and savings can fund care after income, with yearly cost growth.

How Many Bundles for a Sew-In Calculator

Bundle range and grams for a sew-in by style and length, with a second seller chart as a cross-check

Wig Density to Bundles Converter

Estimated bundles for a 150, 180, 200 or 250 density wig at your length, with grams

Sew-In and Wig Install Total Cost Calculator

Hair, closure or frontal, stylist fee, products and tip added into one total

Bundle Length Shrinkage Calculator

What bundle length to order so body wave or curly hair lands at your target length

Hair Install Cost Per Week Calculator

Cost per week, month and year of an install, with optional rest weeks between installs

Hair Bundle Reuse Cost Per Wear Calculator

Cost per wear of bundles reused across installs, with install and care costs

Lace Wig vs Sew-In vs Tape-In Cost Calculator

Cost per month and year of three hair methods from your own prices and lifespans

Takedown and Reinstall Schedule Planner

Takedown and reinstall dates with rest weeks between sew-in installs

SAT Score Calculator with Percentile

Add Reading and Writing and Math into a 400 to 1600 total with College Board percentiles

AP Score Distribution 2026

Percent of students who earned a 5, 4, 3, 2 or 1 on each AP exam in 2026

GRE Score Percentile Calculator

Verbal, Quantitative and Analytical Writing scores matched to the ETS percentile table

GMAT Focus Score Percentile Calculator

GMAT Focus total score from 205 to 805 matched to its GMAC percentile ranking

LSAT Score Percentile Calculator

Scaled LSAT score from 120 to 180 matched to the LSAC percent below

MCAT Score Calculator

Add four MCAT section scores into a 472 to 528 total with AAMC percentile ranks

Test Percentile to Score Lookup

Lowest SAT, GRE, GMAT Focus, LSAT or MCAT score that reaches a target percentile

Test Score Goal Planner

Section score needed to reach a goal SAT or MCAT total, with the goal percentile

College Score Range Comparison Calculator

Compare an SAT, ACT, LSAT, GMAT or MCAT score to a school 25th to 75th percentile range

Words to Number Converter

Spelled-out English numbers converted back to digits, with hyphens, "and", minus and decimals

Ordinal Number Generator

Ordinal suffixes (1st, 2nd, 3rd, 11th) and spelled-out ordinals for any number or range

Roman Numeral Date Converter

Any date written in Roman numerals, in day-month-year, month-day-year or year-month-day order

Roman Numeral Calculator

Add, subtract, multiply and divide Roman numerals, with the answer in Roman numerals and numbers

Chinese Numerals Converter

Numbers in standard, traditional and formal financial Chinese characters with correct 零 placement

Greek Numerals Converter

Numbers from 1 to 9999 in alphabetic Greek numerals, and Greek numerals back to numbers

Maya Numerals Converter

Numbers in Maya dots, bars and shells with drawn glyphs, Unicode and the Long Count variant

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.

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.

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; cups follow UK…

BMR Calculator

Free BMR calculator using the Mifflin-St Jeor equation. Calculate your basal metabolic rate (calories burned at rest) and see maintenance calories across activity levels.

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 explained.

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 versus US DDD trap…

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, enter weight and…

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 and what raise…

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 excess.

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 article, or website…

Class Rank Percentile Calculator

Free class rank percentile calculator. Enter your class rank and class size to get your percentile and top-percent standing.

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 like $1, and…

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 needles standard.

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 accurately.

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, pregnancy, lactation).

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 alongside.

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) to see when an EV…

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 assignment. Shows…

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 conversion factors.

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 less. Uses the Bank…

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 (US).

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 Success scale.

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 in your browser.

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 measuring guide.

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.

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.

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 explained.

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.

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 needles standard.

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 note.

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 3758 and US care label…

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 financial advice.

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 optional calendar reminder…

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 Minecraft Wiki…

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 moving-industry data…

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.

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 prices.

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 buy.

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 data.

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 generators by BTU/hr.

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 binding strip calculator…

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 home.

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 average wedding RSVP…

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.

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 the UK cup ladder.

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, and the $9,200…

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 topics by priority, with…

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 from your bill.

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, using 49 CFR 574.5…

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 when your…

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 for Thanksgiving…

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, AU and JP too.

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 rate, no treadmill test…

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 half your height.

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 final course grade and…

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.

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 names in each category.