What does this tool do?
Bagged soil is sold by volume, usually in cubic feet. This calculator turns bed or pot dimensions into cubic feet, cubic yards and a bag count.
The Formula
Rectangle: L × W × Depth ÷ 12; Round: π × (Diameter ÷ 2)² × Depth ÷ 12Frequently Asked Questions
How much soil does a raised bed need?
Multiply length by width by depth in feet. A 4 × 8 ft bed filled 10 inches deep needs about 27 cubic feet, or roughly 18 bags of 1.5 cubic feet.
Should a raised bed use topsoil or potting mix?
A blend of topsoil and compost suits vegetables, while potting mix is better for containers because it drains faster. Avoid heavy garden soil in pots.