40 free tools · no signup Buy the right amount.
Buy the right amount.
Measure once, order once.
Material calculators for every home-improvement project — paint, tile, flooring, concrete and more. Enter your dimensions, get exact quantities with the waste factor already built in.
40Calculators
$500+Saved per project*
0Data stored
All calculators
Every tool in the shop
40 live now, the rest rolling out weekly. Each tool includes a full guide on how to measure and avoid common ordering mistakes.
01 · Surfaces Paint Calculator How many gallons (or litres) of paint you need for any room, walls and ceiling. 02 · Surfaces Tile Calculator How many floor or wall tiles you need, with grout and waste factor. 03 · Surfaces Flooring Calculator Square footage and boxes of laminate, hardwood or vinyl flooring needed. 04 · Structure Concrete Calculator Cubic yards and bags of concrete for slabs, footings and patios. 05 · Structure Drywall Calculator Sheets of drywall, joint compound, tape and screws for any room. 06 · Surfaces Wallpaper Calculator Rolls of wallpaper needed, adjusted for pattern repeat. 07 · Surfaces Carpet Calculator Square yards of carpet and padding, with seam and waste allowance. 08 · Landscaping Mulch Calculator Cubic yards or bags of mulch for garden beds and landscaping. 09 · Landscaping Gravel Calculator Tons and cubic yards of gravel for driveways and paths. 10 · Outdoor Deck Calculator Deck boards, joists, posts and fasteners for your build. 11 · Outdoor Fence Calculator Posts, rails, pickets and concrete bags for any fence run. 12 · Structure Roofing Calculator Roofing squares and shingle bundles by area and pitch. 13 · Climate Insulation Calculator Rolls or batts of insulation by area and target R-value. 14 · Structure Stair Calculator Risers, treads and stringer length to building code. 15 · Surfaces Square Footage Calculator Square feet for any room, wall or project area. 16 · Landscaping Topsoil Calculator Cubic yards and bags of topsoil for lawns and beds. 17 · Landscaping Sod Calculator Rolls or pallets of sod for any lawn area. 18 · Structure Brick Calculator Bricks and mortar bags needed for a wall. 19 · Structure Concrete Block Calculator Cinder/concrete blocks and mortar for a block wall. 20 · Landscaping Sand Calculator Tons and cubic yards of sand for any project. 21 · Surfaces Grout Calculator Pounds of grout needed from tile size and joint width. 22 · Surfaces Primer Calculator Gallons of primer needed before painting. 23 · Outdoor Deck Stain Calculator Gallons of stain or sealer for decks and fences. 24 · Surfaces Baseboard & Trim Calculator Linear feet of baseboard and trim for a room. 25 · Surfaces Crown Molding Calculator Linear feet of crown molding with corner waste. 26 · Structure Plywood / Sheathing Calculator Sheets of plywood or OSB for floors, walls and roofs. 27 · Structure Wall Framing Calculator Studs and plates for a framed wall at 16 or 24 in OC. 28 · Structure Rebar Calculator Length and number of rebar pieces for a slab grid. 29 · Outdoor Paver Calculator Pavers and base material for patios and walkways. 30 · Outdoor Retaining Wall Calculator Blocks and base for a retaining wall by length and height. 31 · Outdoor Asphalt Calculator Tons of asphalt for driveways and parking areas. 32 · Landscaping Excavation / Dirt Calculator Cubic yards of dirt to remove or fill. 33 · Structure Board Feet Calculator Board feet of lumber from dimensions and quantity. 34 · Surfaces Cost per Square Foot Calculator Total cost and cost per sq ft for any surface project. 35 · Climate Air Conditioner BTU Calculator BTU and tonnage needed to cool a room by size. 36 · Climate Heating BTU Calculator BTU needed to heat a room by size and climate. 37 · Structure Joint Compound Calculator Buckets of mud needed to finish drywall. 38 · Landscaping Compost Calculator Cubic yards of compost to amend a garden area. 39 · Structure Concrete Footing Calculator Concrete volume for round and square footings. 40 · Surfaces Wall Square Footage Calculator Paintable or tileable wall area minus openings.
Why trust the numbers
Built on industry coverage rates
Every calculator uses standard manufacturer coverage rates and the waste factors that real contractors apply — typically 10% for paint and flooring, 10–15% for tile depending on layout. Results run entirely in your browser; nothing you type is sent anywhere. Use them to plan and to sanity-check a contractor's quote before you order.