Concrete by slab size
Cubic yards and bag counts for common slab footprints at the standard 4-inch thickness. Pick a size, or run your exact dimensions through the calculator.
8 × 8 ft slab
0.79 yd³ · 40 × 80-lb bags
10 × 10 ft slab
1.23 yd³ · 62 × 80-lb bags
10 × 12 ft slab
1.48 yd³ · 74 × 80-lb bags
12 × 12 ft slab
1.78 yd³ · 89 × 80-lb bags
12 × 16 ft slab
2.37 yd³ · 118 × 80-lb bags
12 × 20 ft slab
2.96 yd³ · 147 × 80-lb bags
16 × 20 ft slab
3.95 yd³ · 196 × 80-lb bags
20 × 20 ft slab
4.94 yd³ · 245 × 80-lb bags
20 × 24 ft slab
5.93 yd³ · 294 × 80-lb bags
24 × 24 ft slab
7.11 yd³ · 353 × 80-lb bags
24 × 30 ft slab
8.89 yd³ · 440 × 80-lb bags
30 × 40 ft slab
14.81 yd³ · 734 × 80-lb bags