Concrete & Materials

Concrete Volume Calculator

Estimate concrete volume from length, width and depth, with an optional waste allowance.

Concrete Volume Calculator

Enter your values below and press calculate.

Enter your values above to see the result.

Formula used

Volume = length × width × depth. Depth is converted from millimetres to metres before calculating.

Example

A 5m × 3m slab at 150mm deep is 5 × 3 × 0.15 = 2.25m³. With 10% allowance, that becomes 2.48m³.

Important note

This is an estimating tool only. Allow for uneven formation, overbreak, reinforcement, voids, specified minimum order quantities and supplier requirements.

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