Home and DIY Calculators
Measure a room, a slab or a wall and find out how much concrete, flooring or paint to buy before you head to the store.
3 calculators
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Concrete Calculator
Cubic yards, cubic meters and bags of concrete for slabs, footings, columns, stairs and post holes.
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Square Footage Calculator
Total area of rooms of any shape in square feet, square meters and square yards, with waste and cost.
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Paint Calculator
How many gallons or liters of paint to buy for walls and ceilings, minus doors and windows.
About these home and diy calculators
These calculators turn tape-measure numbers into the quantities you actually buy: cubic yards and bags of concrete, square feet of flooring or turf, and gallons or liters of paint.
Every measurement has its own unit menu, so you can enter feet, inches, yards, meters or centimeters just as they come off your tape. Results include a waste allowance where it matters, and bag and can counts are rounded up to whole units you can buy.