Concrete wall calculator

Give the wall's length, height and thickness. For each door or window opening, enter its area, and the tool takes that amount away.

Wall length (ft)

Height (ft)

Thickness (in)

Openings (sq ft)

Optional. A 3 by 7 ft door is 21 sq ft.

Add extra for waste0%5%10%

Enter the wall length, height and thickness to see the cubic yards.

40 lb bags
50 lb bags
60 lb bags
80 lb bags

Cubic yards per 10 ft of wall

Height	6 in thick	8 in thick	10 in thick	12 in thick
2 ft high	0.37	0.49	0.62	0.74
4 ft high	0.74	0.99	1.23	1.48
8 ft high	1.48	1.98	2.47	2.96

This step comes before you add extra. To find a wall's volume, multiply length × height × thickness; its footing is poured separately.

Concrete retaining wall calculator

Every 10 ft of wall that is 8 in thick and 8 ft high needs 1.98 cubic yards. One 10-yard truck holds about 45 ft, with 10% extra. Run the footing calculator to work out how much the wall's footing takes. Order them together when both get poured on the same day.