How much material do you need?
Calculate it before you buy. Free material calculators for tile, paint, concrete, flooring and more — with the waste allowance and cost estimate built in.
Every formula tested
Prices checked & dated
Runs in your browser — nothing is sent to a server
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Material calculators
Pick your project. Each calculator shows the formula it uses, a worked example, and what the materials typically cost — so you can check our math before you spend a dollar.
Square Footage Calculator
How many square feet is that room, wall or yard? Measure it once, minus doors, windows and cutouts.
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Tile Calculator
Tiles for floors and walls — tile size, grout gap and a sensible waste allowance included.
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Paint Calculator
Gallons for walls and ceilings, based on coats, coverage and the openings you skip.
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Concrete Calculator
Cubic yards for slabs and footings, plus how many 60 lb and 80 lb bags that really is.
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Mulch Calculator
Cubic yards and bags for your beds, at exactly the depth your plants need.
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Gravel Calculator
Cubic yards and tons for driveways, paths and drainage trenches, by depth.
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Flooring Calculator
Boards, boxes and waste allowance for laminate, vinyl plank and hardwood.
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Deck Board Calculator
Deck boards and fasteners for your deck size, board width and layout direction.
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Drywall Calculator
Sheets for walls and ceilings, in 4×8 and 4×12, with openings subtracted.
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Wallpaper Calculator
Rolls you actually need, accounting for pattern repeat, doors and windows.
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Then plan the budget
Knowing the quantity is half the job. Our cost guides break down what common projects cost in 2026 — materials, typical contractor prices, and where people overspend. Every price is dated and sourced, and every calculator follows the method on How We Calculate.