Calculator
Concrete volume calculator
Calculates the volume of one rectangular concrete element from three dimensions and adds the allowance you choose.
Online calculation
Enter dimensions
Result
Result
Your result will appear here after calculation.
Calculation formula
Volume = length × width × height or thickness; volume with allowance = volume × (1 + allowance / 100).
Example: A 5 × 4 m slab with a 0.1 m thickness has a geometric volume of 2 m³. With a 10% allowance, the estimate is 2.2 m³.
Frequently asked questions
Can I use this for a strip?
Yes. Enter the length of the strip section, its width and its height. For a closed foundation, calculate separate sections or use the project volume.
Does the calculator include reinforcement?
No. It only estimates geometric concrete volume and is not a structural engineering calculation.