Concrete Slab Volume

About this calculator

Enter Slab area (m2) and the Concrete Slab Volume calculates Concrete at 10 cm, Concrete plus 10% waste, Gravel sub-base 10 cm in one step. It is built for home & construction jobs where a quick, repeatable answer beats guesswork. Forgetting that slab thickness changes volume linearly; 15 cm needs 50% more than 10 cm.

How it works

The calculator multiplies your input by a fixed coefficient for each line. For example, every 1 m2 gives 0.1 m3 for concrete at 10 cm.

Worked example

If you enter 15 (Slab area (m2)), Concrete at 10 cm comes to 1.5 m3 and Gravel sub-base 10 cm comes to 1.5 m3.

Common mistakes

Forgetting that slab thickness changes volume linearly; 15 cm needs 50% more than 10 cm.
Mixing metric and imperial measurements on the same job.

FAQ

How much concrete at 10 cm do I need per m2?

Each 1 m2 gives 0.1 m3.

How is Gravel sub-base 10 cm calculated?

Gravel sub-base 10 cm equals your input times 0.1 m3. With 15 entered, that is 1.5 m3.

Are the results exact?

Multiplication is exact; the inputs behind concrete at 10 cm are typical figures, so check them against your own conditions. This is general information, not professional advice.

What is the most common mistake?

Forgetting that slab thickness changes volume linearly; 15 cm needs 50% more than 10 cm.

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