Concrete Volume Calculator
Calculate the volume of concrete for a slab or footing in cubic metres and litres.
Quick answer: enter your details below and click Calculate — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
C
Calculators
Enter your details below.
How to use
- Enter the length and width of the slab in metres.
- Enter the depth (thickness) in metres.
- Press Calculate to see the volume in cubic metres and litres.
About this tool
Multiply length by width by depth, all in metres, to get the volume in cubic metres. The calculator also shows the same volume in litres, since one cubic metre equals 1000 litres, which helps when comparing with bag sizes or mixer capacities.
Frequently asked questions
What if my depth is in centimetres?
Divide centimetres by 100 to get metres first. For example, a 15 cm slab is 0.15 metres deep.
Should I order extra concrete?
Yes, most builders add around 5 to 10 percent for uneven ground and spillage, on top of the calculated volume.