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Construction calculators

Concrete, flooring, paint, roofing and more. 9 tools

Most popular

Concrete

Work out how many cubic yards of concrete — or how many 40, 60 or 80 lb bags — you need for a slab, footing or round column.

Square Footage

Find the area of a room or lot in square feet or square meters for rectangles, circles, triangles and trapezoids, with optional cost.

More construction tools

Board Foot

Calculate board feet and lumber cost from thickness, width, length and quantity.

Drywall

Count the drywall sheets needed for a room’s walls and ceiling, with a waste allowance.

Flooring

Work out how many boxes of laminate, vinyl plank, hardwood or tile to buy, including a waste allowance.

Gravel

Estimate the cubic yards and tons of gravel, crushed stone or sand needed to cover an area to a given depth.

Mulch

Find how many cubic yards or bags of mulch, compost or topsoil you need to cover a garden bed to a given depth.

Paint

Estimate how many gallons of paint a room needs from its size, doors, windows and number of coats.

Roofing

Estimate roof area, roofing squares and shingle bundles from the house footprint and roof pitch.
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