Free tool
Concrete calculator
Cubic yards and bag counts for slabs and footings, with adjustable waste.
Pour
Volume
- Cubic yards (ready-mix)
- 5.43
- Cubic feet
- 147
- 60 lb bags
- 326
- 80 lb bags
- 245
Order ready-mix by the cubic yard. Bag counts are for small pours — estimates, verify before ordering.
Frequently asked
- How do you calculate concrete in cubic yards?
- Multiply length × width × thickness (in feet), then divide by 27. This calculator converts inches for you and adds a waste factor.
- How many bags of concrete per cubic yard?
- About 60 sixty-pound bags or 45 eighty-pound bags per cubic yard. Bags suit small pours; order ready-mix by the yard for larger jobs.
- How much waste should I add?
- 10% is a common allowance for slabs and footings to cover spillage, uneven subgrade, and over-excavation.
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