Concrete for a 12×24 slab at 6" thick
A 12 ft × 24 ft slab poured 6 inches thick needs the amounts below (a 10% waste allowance is already included).
Concrete needed
5.87cubic yards
158
cubic feet
264
80 lb bags
352
60 lb bags
Advertisement
Need different dimensions? Use the full concrete calculator to enter any size, thickness, and waste allowance.
For a slab this size, 5.87 cubic yards is usually cheapest as ready-mix delivery. About 264 bags of 80 lb mix would do it by hand.