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How much soil for a 2x8 raised bed?

Filling a 2 × 8 ft raised bed 12 inches deep takes 16 cubic feet of soil: 0.59 cubic yards, or 11 bags of 1.5 cubic feet. Every extra inch of depth adds 1.33 cubic feet.

2 × 8 ft bed, filled 12 inches deep

16cubic feet at 12 in
0.59cubic yards
11bags of 1.5 ft³
+1.33ft³ per extra inch

or mix your own: 8 topsoil+4 compost

  • About 1,300 lb: 2 trips in a vehicle with 1,250 lb of room after its driver, or one delivered load.
  • 0.59 cubic yards in bulk. Suppliers’ minimum loads run 1 to 5 yards, so get one delivered quote before buying 11 bags.

Soil depth, inches

A 2 × 8 ft bed filled 12 inches deep, drawn across its 24-inch width. 12 in of soil 24 in inside width
Bags of two-thirds topsoil, one-third compost, the University of Minnesota Extension’s mix. Weight as screened topsoil at 2,200 lb a cubic yard.
Open these measurements in the soil calculator

Soil for a 2 × 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 depthCubic feetCubic yardsBags of ¾ ft³Bags of 1 ft³Bags of 1.5 ft³Bags of 2 ft³Bags of 3 ft³
6 in80.3118643
8 in10.670.41511864
10 in13.330.491814975
12 in160.5922161186
18 in240.89322416128
24 in321.194332221611

Measure inside the walls

The table uses the full 2 × 8 ft. If that is the outside size of a wooden bed built from boards 1½ inches thick, the growing space inside is 21 × 93 inches. At 12 inches deep that holds 13.56 cubic feet, 15% 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.

Building it from 2 × 6 boards? The 2 × 8 ft bed plan has the cut list and the steps for this outside size: filled 10 inches deep, it takes 8 bags.

Inside 21 × 93 inOutside 24 × 96 in · boards 1½ in thick

Beds sold at 2 × 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.

What to plant in a 2 × 8 ft bed

Four planting layouts drawn to scaleA 2 × 8 ft bed holds 16 heads of lettuce, 256 carrots or 4 trellised tomatoes at Colorado State University Extension’s spacings. See a salad bed, tomatoes and peppers, and roots and onions with every plant counted.

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 0.59 cubic yards, use the bagged vs bulk soil calculator.

Other bed sizes