How to use it
- Enter length, width and depth using one unit.
- Select that measurement unit.
- Set a waste percentage and calculate.
Concrete Calculator
Estimate concrete volume from length, width, thickness and waste allowance.
Important: This calculator provides material estimates only. It is not structural, safety, legal, or building-code advice. Always confirm with a qualified professional before construction.
About the Concrete Calculator
This estimator converts three entered dimensions into an approximate concrete volume and adds a selected waste allowance.
Estimation formula
Base volume equals length × width × depth. The dimensions are converted to meters before the waste percentage is added.
Example
A 5 m × 4 m area with 0.1 m thickness has 2 m³ of base volume, or 2.2 m³ after a 10% allowance.
Notes
The estimate does not account for site conditions, form variations, structural requirements, delivery constraints or building codes.