Free tools
Construction calculators in feet and inches
Free calculators for the numbers you bid every day: cubic yards, roofing squares, drywall sheets, board feet and more. The working is shown, and every default cites its source.
Drawn to scale
The picture redraws as you type, so you can see what you are ordering.
The maths shown
Every result opens up to a step-by-step working with your own numbers.
Rounded to what you buy
Bags, cans, sheets, pallets and boxes, never a half-tile short.
Free and ungated
Copy, share by link or print. No account needed to use one.
Every trade
Pick your calculator
Concrete, roofing, drywall, flooring and framing, plus the feet-inches and scale maths that sits under every takeoff. General contractor, sub or estimator.
Concrete calculator (cubic yards)
Cubic yards for a slab from feet and inches, with your over-order on top.
Roofing squares calculator
Plan area and pitch to squares, waste and bundles.
Drywall calculator (sheets)
Walls and ceilings to whole 4x8, 4x10 or 4x12 sheets.
Flooring calculator (sq ft and sq yd)
Square feet with waste, square yards and boxes, room by room.
Board foot calculator
Board feet and linear feet for a whole lumber list.
Stud calculator (16 or 24 in O.C.)
Studs per wall at 16 or 24 in O.C., plus your extras.
Feet and inches calculator
Add, subtract and multiply ft-in-fraction to the nearest 1/16 in.
Architect scale calculator
Paper inches to real feet at architect and engineer scales.
Every number has a source
Each calculator ships with its formula, a worked example and the source of every default. Anything we can't cite is a field you fill in.
Save the counting for the calculator
MetreMate measures every dimension you would normally type in, straight off your PDF plan.
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