Home, DIY & Construction tools
DIY and construction calculators that estimate materials before you buy, paint, flooring, concrete, framing, roofing, and HVAC sizing. Each runs in your browser, so you can plan a project in seconds without a signup.
Popular Home, DIY & Construction tools
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Paint Calculator
Work out how many gallons of paint a room needs from its dimensions and number of coats, with doors and windows subtracted from the wall area. Calculates in your browser.
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Concrete Calculator
Calculate the concrete for a slab, footing, or pad in cubic yards and cubic feet, plus how many 40, 60, or 80 lb bags it takes, with a waste allowance. Calculates in your browser.
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BTU Calculator
Estimate the cooling BTU and tons an air conditioner needs for a room from its size, ceiling height, sun exposure, occupants, and whether it’s a kitchen. Calculates in your browser.
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Tile Calculator
Find how many tiles and boxes you need for a floor or wall from the area and your tile size, with an adjustable waste allowance for cuts and breakage. Calculates in your browser.
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Flooring Calculator
Work out how many boxes of flooring to buy from the room area, your box coverage, and a waste allowance, with the total material cost. Calculates in your browser.
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Square Footage Calculator
Work out the square footage of an area from its length and width in feet and inches, across one or more identical areas, with an optional waste allowance and material cost. Calculates in your browser.