How to Calculate Concrete for a Footing
Follow these steps to get the right amount of concrete for any footing project, then use the calculator below to skip the math.
- Measure the area. Multiply length × width in feet to get square footage.
- Apply standard depth. A footing typically uses 8" of concrete.
- Convert to cubic yards. Area × (depth in inches ÷ 12) ÷ 27 = cubic yards.
- Add overage. Multiply by 1.10 to cover 10% waste.
- Round up. Always round up to the next whole cubic yard or bag.
Calculate Concrete
You need
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cubic yard
- Area
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- Volume
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- With 10% overage
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- Or in 60 lb bag
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- Estimated cost (US avg)
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