Concrete Slab Volume Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the slab length, width and depth.
- Press Calculate for the volume in cubic metres.
How it works
The volume of a slab is length × width × depth, all in metres, giving cubic metres (m³).
Order a little extra to allow for uneven ground and spillage.
Worked example
4 m × 3 m × 0.1 m slab. Volume = 4 × 3 × 0.1 = 1.2 m³.
Frequently asked questions
How many bags is that?
Use the Concrete Bags Calculator — roughly 0.01 m³ per 20 kg bag.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.