Disclaimer

MeasuredBuild calculators estimate how much material a job needs. They do not replace professional advice.

Estimates, not guarantees

A result is only as good as the measurements you enter. Real jobs vary: ground is uneven, forms bow, and some material is always lost. That is why each calculator adds an allowance for waste, which you can change.

Not engineering advice

The calculators work out quantities. They do not check whether a design is safe or strong enough. For anything that carries weight, like a slab under a building, a footing, a wall or steps, follow the plans for the job and ask your local building department or an engineer.

Check before you buy

Product yields vary with the mix and the water you add. Confirm quantities with your supplier or contractor before you order, and read the product’s own instructions.

Local codes come first

Building codes differ by city and country. Where your local code or your plans give a different figure, use theirs.