Concrete Calculator
Calculate cubic yards of concrete needed for a slab, footing or column, plus bags of 80lb mix and estimated cost.
Concrete needed (yd³)
1.63
Breakdown
- Volume (ft³)
- 44
- 80 lb bags
- 74
- 60 lb bags
- 98
Last updated:
FAQ
How much does a yard of concrete cover?
One cubic yard (27 ft³) covers 81 ft² at 4 inches thick — the standard residential slab thickness.
Should I order extra concrete?
Yes — add 10% for waste and uneven subgrade. Running short mid-pour is far costlier than a small leftover.
How long does concrete take to cure?
Initial set in 24–48 hours, ~70% strength at 7 days, full design strength at 28 days. Keep it moist the first week for maximum durability.
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