Free Construction Calculators

Instant, accurate calculations for concrete, structural work, roofing, earthwork, and finishing. No signup. No data sent to server.

🧱

Concrete

Volume, mix ratio, bags needed

🔩

Rebar, steel, columns, stairs

🏠

Roof area, material quantity

🚜

Cut & fill, excavation volume

🖌️

Paint, tiles, bricks & mortar

10+

Calculators