Concrete for common slab sizes

Cubic yards of concrete to order (with 10% extra) and 80 lb bags for popular patio, shed, driveway and garage slab sizes. For any other size, use the concrete calculator.

Slab (ft)	Area	4 in thick	6 in thick	80 lb bags (4 in)
4 × 4	16 sq ft	0.22 yd³	0.33 yd³	10
4 × 8	32 sq ft	0.43 yd³	0.65 yd³	20
6 × 6	36 sq ft	0.49 yd³	0.73 yd³	22
8 × 8	64 sq ft	0.87 yd³	1.3 yd³	40
8 × 10	80 sq ft	1.09 yd³	1.63 yd³	49
8 × 12	96 sq ft	1.3 yd³	1.96 yd³	59
10 × 10	100 sq ft	1.36 yd³	2.04 yd³	62
10 × 12	120 sq ft	1.63 yd³	2.44 yd³	74
10 × 16	160 sq ft	2.17 yd³	3.26 yd³	98
10 × 20	200 sq ft	2.72 yd³	4.07 yd³	123
12 × 12	144 sq ft	1.96 yd³	2.93 yd³	88
12 × 16	192 sq ft	2.61 yd³	3.91 yd³	118
12 × 20	240 sq ft	3.26 yd³	4.89 yd³	147
12 × 24	288 sq ft	3.91 yd³	5.87 yd³	176
14 × 14	196 sq ft	2.66 yd³	3.99 yd³	120
16 × 16	256 sq ft	3.48 yd³	5.21 yd³	157
16 × 20	320 sq ft	4.35 yd³	6.52 yd³	196
20 × 20	400 sq ft	5.43 yd³	8.15 yd³	245
20 × 24	480 sq ft	6.52 yd³	9.78 yd³	294
20 × 30	600 sq ft	8.15 yd³	12.22 yd³	367
24 × 24	576 sq ft	7.82 yd³	11.73 yd³	352
24 × 30	720 sq ft	9.78 yd³	14.67 yd³	440
24 × 36	864 sq ft	11.73 yd³	17.6 yd³	528
30 × 30	900 sq ft	12.22 yd³	18.33 yd³	550
30 × 40	1,200 sq ft	16.3 yd³	24.44 yd³	734
40 × 60	2,400 sq ft	32.59 yd³	48.89 yd³	1467