Estimate soil volume for garden beds, planters and landscape areas using length, width and soil depth.
For rectangular beds, soil volume is area multiplied by fill depth. If a planter is not rectangular, divide it into simple shapes or use an average internal width.
Cubic yards = area \u00d7 (depth \u00f7 12) \u00f7 27A 12 \u00d7 4 ft raised bed filled 10 inches deep needs about 1.48 cubic yards of soil.
Multiply the internal length by internal width and the soil depth. This calculator handles the inch-to-foot conversion for depth.
Divide the required cubic feet by the cubic-foot volume printed on each bag, then round up to a whole bag.
Many gardeners use a soil blend rather than pure topsoil. The right mix depends on crops, drainage and local soil.
Yes for an estimate. Measure several points and use a reasonable average depth, or divide the area into sections with different depths.