Free Construction Calculators & Material Estimators

Renovation Budget Calculator

Whole-project budget with contingency and allowance tracking

Kitchen Remodel Budget Calculator

Kitchen budget split by editable line-item percentages

Bathroom Remodel Budget Calculator

Bathroom budget split by editable line-item percentages

Contractor Quote Comparison Calculator

Compare up to three contractor bids like for like, with a deposit check

Labour vs Materials Cost per Square Foot

Labour vs materials cost per square foot and per square metre

DIY vs Hire Renovation Savings

DIY vs contractor savings with tool rental and time value

Renovation Loan: HELOC vs Personal Loan

Renovation financing: HELOC vs personal loan payments

Renovation Timeline Planner

Renovation timeline with lead-time order-by dates and a buffer

Renovation ROI vs Resale Value

Renovation ROI: cost recouped versus the value you expect it to add

Concrete Calculator

Cubic yards for slabs and footings

Flooring Calculator

Square footage with waste factor

Paint Calculator

Gallons needed for walls

Drywall Calculator

Sheets for walls and ceilings

Gravel & Aggregate Calculator

Cubic yards and tons for driveways

Insulation Calculator

Batts needed with recommended R-values

Lumber Calculator

Board feet and framing materials

Wood Equilibrium Moisture Content Calculator

EMC from temperature and humidity, dry and humid season

Wood Movement Calculator

How much a board or tabletop swells or shrinks across the grain

Wood Moisture Content Calculator

Moisture content from wet and oven-dry weights, and target weight

Miter and Bevel Angle Calculator

Saw settings for frames, N-sided boxes and sloped planters or hoppers

Box Joint Finger Calculator

Odd finger count and exact finger width for a board width

Shelf Spacing Calculator

Equal openings between shelves and shelf heights from the bottom

Wood Finish Quantity Calculator

Stain, varnish or polyurethane to buy from area, coats and label coverage

Panel Glue-Up Board Count Calculator

Boards needed for a tabletop width with joint loss and trim

Roofing Squares & Shingle Calculator

Roof area, squares, shingle bundles, underlayment and ridge cap

Shed Roof Material Takeoff

Roof area, sheets, packages, and trim

Wainscoting Batten Spacing

Equal panel widths and batten marks

Baluster Spacing

Rail count, exact gap and station marks

Firewood Cord Calculator

Stack or truck load to cords and price per cord

Baseboard Cut List Optimizer

Boards to buy and per-board cuts, with kerf and splices

Wall Framing Takeoff

Studs, plates, openings, and sheathing

French Drain Planner

Slope, gravel, pipe, fabric, and spoil

Voltage Drop & Wire Size

Volts and percent drop by AWG, and the smallest wire

Sump Pump Size & Cycle

Basin inflow, required GPM, and cycles per hour

Gutter & Downspout Flow

Roof runoff gpm and downspout load

Cabinet Door Size & Overlay

Overlay and inset door sizes and cut list

Well Pressure Tank Sizing

Drawdown, acceptance factor, and total tank volume

Septic tank size by bedrooms

Minimum tank gallons for your bedroom count under four published state rules

Septic tank capacity in gallons

Gallons and liters from tank dimensions for rectangular, vertical and horizontal round tanks

How often to pump a septic tank

Years between pump-outs from tank size and number of people, from an extension table

Septic drain field size

Absorption area and trench length from design flow, percolation rate and trench width

Well casing gallons per foot

Gallons per foot of casing and stored water from diameter, depth and static water level

Well pump total dynamic head

Total dynamic head, water horsepower and brake horsepower for a well pump

Well pump GPM needed

Pump GPM from fixture count or peak simultaneous use, with storage for a low-yield well

Slab Rebar Grid Calculator

Bar count, length and weight of a rebar grid for a rectangular slab

Spread Footing Size Calculator

Footing side or width from load and allowable soil bearing pressure

Stair Stringer Calculator

Risers, treads, run, and stringers

Lot Coverage & FAR

Floor area ratio, coverage and remaining room

Paver Base & Bedding Sand

Aggregate and sand for patios and driveways

Epoxy Coverage Calculator

Gallons for floors, flood coats and deep pours

Retaining-Wall Drainage Stone

Drainage zone and base stone quantity

Concrete Block & Mortar

Blocks, mortar volume, and bag count

Brick Pallet Coverage

Pallets to order, wall area per pallet and leftovers

Bricks per Square Foot Chart

Brick counts and mortar by size and joint

Brick Course Height Calculator

Courses to wall height and height to courses

Nominal vs Actual Lumber Size Chart

2x4 to 2x12 actual dry sizes and board feet

Board Foot Cut List Calculator

Total board feet, MBF and cost for a whole project

Lumber Price per Board Foot Converter

Price per piece, linear foot, board foot and MBF

Drywall Sheets by Room Calculator

Sheets for walls and ceiling from room dimensions

Paver Count Calculator

How many pavers from area, size and joint width

Mulch Bags to Cubic Yards Calculator

Bags, cubic yards and coverage at any depth

Concrete Block Wall Module Planner

Courses, units and opening sizes on the 8 in. module

Firebrick Lining Calculator

Split firebricks and refractory mortar for a firebox

Brick Arch Calculator

Segmental arch radius, voussoirs and cut angle

Tile & Grout Calculator

Tile count, grout, and thinset estimate

Deck Material Calculator

Deck boards, decking linear feet, joists and deck area

Fence Calculator

Posts, rails, and pickets

Brick Bond Pattern Waste Guide

Running, Flemish and English bond brick counts

Brick Wall Calculator

Brick count and mortar volume from BIA tables

Wallpaper Calculator

Rolls needed with pattern match

Rafter Length & Roof Pitch Calculator

Common and hip rafter length, pitch in X:12, degrees and percent.

Shelf Sag Calculator

How much a shelf will bend: sag in inches and L/ratio from wood stiffness and load.

Mulch & Topsoil Calculator

Cubic yards and bags for garden beds

Area Rug Size Calculator

Rug range for your room and seating group, front legs or all legs on

Curtain Rod Height and Width

Rod height above the frame, rod length, panel width and curtain length

Wall Art Hanging Height and Gallery Wall

Hang at 57 in centre, gallery wall gaps, frame positions and nail heights

Chandelier Size and Hanging Height

Fixture diameter by room or table, and hang height above the table

Dining Table Size Calculator

Table length or diameter for your seats, checked against room clearance

Coffee Table Size and Clearance

Table length from sofa length, depth that keeps 14 to 18 in of clearance

Lumens Needed Per Room

Total lumens for a room from area and recommended footcandles, with lux

Recessed Light Spacing Calculator

Can light grid from ceiling height: spacing, wall distance and count

Curtain Fabric

Widths, metres and yards, plus lining

Drill Speed (RPM) Calculator

RPM range for a drill bit by material and diameter

Surface Speed (SFM) Calculator

Surface feet and metres per minute from RPM and diameter

Milling Feed Rate Calculator

Feed rate from RPM, flutes and chip load per tooth

Tap Drill Size Calculator

Tap drill for metric and inch threads, minor diameter and thread depth

Metric Thread Pitch Chart

Coarse and fine pitch, minor diameter and stress area for M1 to M64

UNC and UNF Thread Chart

Threads per inch, pitch and minor diameter for UNC and UNF, #0 to 1 in

Bolt Circle Calculator

X and Y coordinates of equally spaced holes on a bolt circle (PCD)

Bolt Clearance Hole Size Chart

Close, normal and loose clearance holes for metric and inch fasteners

Sine Bar Calculator

Gauge block stack height for an angle on a 100 mm, 5 in or 10 in sine bar

Lathe Turning RPM and Time Calculator

Spindle RPM, feed per minute, cutting time and removal rate for turning

Taper Per Foot Calculator

Taper per foot, ratio, half angle and included angle from two diameters

Bolt Torque Calculator

Torque for metric classes and SAE grades 2, 5 and 8 from proof load and friction

Sheet Metal Bend Allowance Calculator

Bend allowance, bend deduction, K-factor and flat pattern length

Metal Weight Calculator

Weight of plate, bar, tube and angle in steel, aluminum, brass and copper

Welding Wire and Electrode Usage Calculator

MIG, flux-core and stick consumable needed for a fillet or groove weld

Wire Gauge Amp Rating Calculator

Smallest copper or aluminum AWG for a load, from an NEC-based chart

AWG to mm Calculator

Wire diameter and area for any AWG size, or the AWG for a measured diameter

Sheet Metal Gauge Chart

Gauge to thickness in inches and mm for steel and aluminum, with sheet weight

Rebar Weight Calculator

Weight of rebar by bar size, length and count in lb, kg and tonnes

Shielding Gas Cylinder Duration Calculator

Hours an argon cylinder lasts at your cfh or L/min flow, with cost per hour

Stick Welding Amperage Chart

Amp range for E6010, E6011, E6013 and E7018 electrodes by diameter

Welder Duty Cycle Calculator

Welding minutes per 10 from a duty cycle rating, estimated at other amps

Welding Heat Input Calculator

Arc energy and heat input in kJ/mm and kJ/in from volts, amps and speed

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 gives. Free, runs in…