Concrete Volume Calculator

How to calculate concrete volume

Convert depth from centimetres to metres before multiplying all three dimensions. A five metre by three metre slab at ten centimetres deep has a volume of 1.5 cubic metres.

Formula

length × width × depth ÷ 100

Worked example

Length (m)

5

Width (m)

3

Depth (cm)

10

Applying the formula to these values gives 1.5 m³.

What should I check?

This estimates geometric volume only. It does not specify structural slab depth, concrete strength, reinforcement or any waste allowance.

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