Concrete Calculator

Calculate concrete volume in cubic yards and cubic meters for slabs, footings, and cylindrical columns.

How to use this calculator

1. Select structure.
2. Enter dimensions.
3. Read cubic yards and bag count.

Formula & method

Concrete Volume

Yards = (L × W × (D/12)) / 27

Slab volume math.

Example

10'x10' @ 4" = 1.23 cu yds (~56 80lb bags).

Key insights

• 1 cubic yard = 27 cu ft = ~45 80lb bags.

How to interpret your result

Cubic Yards

Volume for truck ordering.

Frequently asked questions

Slab thickness?

4 inches standard, 5-6 inches for driveways.

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