Calculate cubic yards, cubic feet, and bags for any concrete project.
60 lb = 0.45 cu ft · 80 lb = 0.60 cu ft · includes waste factor
Multiply length × width × depth (all in feet), then divide by 27 to convert cubic feet to cubic yards.
A 60 lb bag yields about 0.45 cu ft; an 80 lb bag yields about 0.60 cu ft. Divide total cubic feet by the bag yield.
1 cubic yard covers 81 sq ft at 4 inches thick, or 54 sq ft at 6 inches thick.
Yes — always order 5–10% extra to account for spills, uneven sub-base, and waste.
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