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Concrete Volume Calculator

Calculate the volume of concrete needed for your slab, foundation, or any other project. Enter the dimensions (length, width, thickness) and instantly get the volume in m³ as well as the number of ready-mix concrete bags required.

Enter the length of the area to be concreted in meters
Enter the width of the area to be concreted in meters
Enter the slab thickness in centimeters

Concrete volume needed

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25 kg bags

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35 kg bags

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How to calculate concrete volume?

  • Concrete slab – Multiply length × width × thickness. A 5 m × 3 m × 10 cm slab = 1.5 m³.
  • Foundation – Calculate the total volume of strip footings by adding each section (length × width × depth).
  • Mix ratio – Ready-mix concrete bags already contain cement, sand, and gravel. Just add water according to the manufacturer's instructions.

Disclaimer

This calculation provides an indicative estimate. Actual volume may vary depending on ground shape, pouring losses, and settling. Allow an extra 5 to 10% margin. For structural work, consult a professional.