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Concrete Calculator - Yards, Bags, Volume

Free concrete calculator. Calculate cubic yards, cubic meters, and bags needed for slabs, footings, and foundations.

Calculate concrete needed for your project

Enter your values to see results

and click the "Calculate" button

Concrete Calculator

Calculate how much concrete you need for slabs, footings, walls, and columns. Always order 5-10% extra for waste and spillage.

Volume = Length × Width × Depth

1 cubic yard = 27 cubic feet. Standard slab: 4" thick. Sidewalk: 4". Driveway: 4-6". Foundation: 8-12".

How thick should concrete be?

Sidewalks: 4". Driveways: 4-6". Patios: 4". Garage floors: 4-6". Foundations: 8-12" depending on load.

Should I use bags or ready-mix?

Bags for small projects (<1 cubic yard). Ready-mix truck for larger projects - more economical and consistent.

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