Concrete for a 12×16 slab at 4" thick
A 12 ft × 16 ft slab poured 4 inches thick needs the amounts below (a 10% waste allowance is already included).
Concrete needed
2.61cubic yards
70
cubic feet
118
80 lb bags
157
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, 2.61 cubic yards is usually cheapest as ready-mix delivery. About 118 bags of 80 lb mix would do it by hand.