How much soil for an 8x8 raised bed? Bags and cubic yards

Soil for an 8 × 8 ft bed at each depth

Whole bags are rounded up. The bed’s wall height is not the soil depth: measure the depth you plan to fill.

Bags of

Soil depth	Cubic feet	Cubic yards	Bags of ¾ ft³	Bags of 1 ft³	Bags of 1.5 ft³	Bags of 2 ft³	Bags of 3 ft³
6 in	32	1.19	43	32	22	16	11
8 in	42.67	1.58	57	43	29	22	15
10 in	53.33	1.98	72	54	36	27	18
12 in	64	2.37	86	64	43	32	22
18 in	96	3.56	128	96	64	48	32
24 in	128	4.74	171	128	86	64	43

Measure inside the walls

The table uses the full 8 × 8 ft. If that is the outside size of a wooden bed built from boards 1½ inches thick, the growing space inside is 93 × 93 inches. At 12 inches deep that holds 60.06 cubic feet, 6% less than the table. Metal and composite walls are thinner, but corner posts and braces still take space, so measure between the inner walls before you order.

Beds sold at 8 × 8 ft

These are the beds we list in this size. A maker’s stated capacity often differs from the table because the inside is smaller than the advertised size or the maker assumes a different fill depth.

Work out your own bed

Open these measurements in the soil calculator to change the depth, add more beds or split the fill into a mix. To compare the cost of bags with a bulk delivery for 2.37 cubic yards, use the bagged vs bulk soil calculator.

Other bed sizes

2 ft wide

2 × 8 ft16 ft³ at 12 in

3 ft wide

3 × 8 ft24 ft³ at 12 in

4 ft wide

4 × 8 ft32 ft³ at 12 in