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Concrete Calculator

Work out concrete volume and the cement bags, sand, aggregate and water needed for M10 to M25 mixes.

Your result

Enter your numbers to see the result.

How this works

Dry volume = wet volume × 1.54 (to allow for voids and bulking).
Each ingredient = dry volume × its share of the mix ratio. One 50 kg cement bag = 0.0347 m³.
Water is estimated at a water–cement ratio of 0.5.

Estimates are for planning only. Prices vary by city, brand and season — confirm with local suppliers and a qualified engineer.

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