Concrete Calculator
Calculate the volume of concrete needed for slabs, footings, columns, and steps.
Concrete Required
How to Use the Concrete Calculator
Choose the shape (slab, column, or footing), enter the dimensions, and get the volume in cubic meters, cubic yards, and bag estimates.
Formula
Slab: L×W×D | Column: π×r²×H | Footing: L×W×D. 1 cy ≈ 45.9 bags of 60-lb or 34.4 bags of 80-lb concrete.
Frequently Asked Questions
Should I order extra concrete?
Yes — order 5–10% more than calculated to account for spillage, uneven ground, and overpours. It's better to have too much than too little.
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