Calculating Your Need
Typically, landscape products are sold by the "cubic yard." That is a cube that's 3 feet on each side. Measure the length and width and depth of the area you need to fill. For example, your yard is 20' by 30' and you want to put in a 6" deep layer of topsoil. You would multiply: 20' x 30' x 0.5' (6" = half a foot). The total equals 300 cubic feet. There are 27 cubic feet in a cubic yard, so divide 300 cubic feet by 27 = 11.11 cubic yards.
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