The toolkit
Free construction material calculators
Choose a project, enter dimensions in feet or metres and estimate how much material to buy. Calculate full cans, boxes, sheets, bags, rolls, cubic yards and whole lengths with openings and waste included.
Paint Calculator
Wall and ceiling paint, primer, rollers and tape
Open calculatorTile Calculator
Floor and wall tiles, boxes, adhesive, grout and spacers
Open calculatorFlooring Calculator
Laminate, vinyl plank, engineered wood and parquet
Open calculatorDrywall Wall Calculator
Wall sheets, guide and upright profiles, screws and compound
Open calculatorDrywall Ceiling Calculator
Ceiling sheets, profiles, hangers, anchors and screws
Open calculatorDrywall Partition Calculator
Partition sheets, UW and CW profiles, insulation and screws
Open calculatorConcrete Calculator
Concrete volume, ready-mix bags, gravel base and rebar
Open calculatorRebar Calculator
Grid bars, lap splices, tie wire and steel weight
Open calculatorPost Hole Concrete Calculator
Concrete per hole, bags, gravel base and total yards
Open calculatorConcrete Footing Calculator
Piers, bell footings, strip footings, form tubes and yards
Open calculatorConcrete Steps Calculator
Stepped volume, landing slab, bags and cubic yards
Open calculatorSelf-Leveling Compound Calculator
Underlayment bags, average depth, primer and coverage
Open calculatorConcrete Removal Cost Calculator
Debris weight, dumpsters and demolition cost
Open calculatorWallpaper Calculator
Wallpaper rolls, full-height strips, pattern waste and paste
Open calculatorUnderlay Calculator
Flooring underlay rolls, strip layout and joint tape
Open calculatorRoofing Calculator
Roof area, shingles or panels, underlayment, trim and fasteners
Open calculatorGravel Calculator
Gravel, crushed stone, sand, mulch and topsoil by volume
Open calculatorBrick Calculator
Bricks, concrete blocks, mortar bags and wall ties
Open calculatorBaseboard Trim Calculator
Baseboard, crown molding, casing, miter angles and caulk
Open calculatorReference
Construction material reference charts
The constants behind the calculators — sheet sizes, bag yields, coverage rates, course heights and pitch multipliers — written out as tables you can read on their own.
- Concrete Bag Yields and Mix Ratios Bag yields, mix proportions and strength classes in one table
- Rebar Sizes, Diameters and Weights Every imperial bar size with diameter, area, weight and metric equivalent
- Paint Coverage per Gallon What a gallon covers on each surface, and gallons for common rooms
- Drywall Sheet Sizes and Thicknesses Sheet sizes, thicknesses, weights and where each one belongs
- Brick Dimensions and Course Heights US brick sizes, bricks per square foot, course heights and wall ties
- Crushed Stone Sizes and Coverage What each stone grade is for, and what a ton and a yard cover
- Roof Measurement and Roofing Squares Pitch multipliers, roofing squares, waste and bundle counts
- Tile Sizes and Grout Joint Widths Tile formats, tiles per square foot, joint widths and trowel sizes