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Concrete Calculator

Estimate the amount of concrete needed for slabs, footings, and columns. Calculate bags required for your construction project.

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Build with Confidence

The Concrete Calculator helps DIYers and contractors estimate the volume of concrete required for a project. Whether pouring a patio slab, a post footing, or circular columns, this tool converts dimensions into cubic yards and the equivalent number of premix bags (60lb or 80lb).

Safety Margin

Professionals typically order 5-10% extra concrete to account for uneven subgrades and spills. Better to have a little left over than to run out mid-pour!

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