Spike's Calculators

Calculate the amount of concrete you will need for an area measured in square metres and a depth (thickness) measured in millimetres.
##### Formula

##### Example Calculation

Cubic metres = S * D where S is the area in square metres D the depth of the area in millimetres

slab covers an area of 55 square metres the average depth is 152 millimetres

First convert the 152 millimetres to metres by dividing by 1000.

152 ÷ 1000 = 0.152

152 millimetres = 0.152 metres

Calculate the volume in cubic feet by multiplying the area by the dept of the slab.

55 * 0.152 = 8.36

You will need 8.36 cubic metres of concrete for this slab.

- enter the square metres of the area
- the slab's thickness (depth) in millimetres
- waste factor (if required) in a percentage

- the amount of concrete in cubic metres
- in cubic yards
- in cubic feet