Concrete for a 40×60 slab at 4" thick

A 40 ft × 60 ft slab poured 4 inches thick needs the amounts below (a 10% waste allowance is already included).

Concrete needed

32.59cubic yards

880

cubic feet

1467

80 lb bags

1956

60 lb bags

Need different dimensions? Use the full concrete calculator to enter any size, thickness, and waste allowance.

For a slab this size, 32.59 cubic yards is usually cheapest as ready-mix delivery. About 1467 bags of 80 lb mix would do it by hand.