Raised bed soil calculator

How to use this calculator

Measure the length and width of the area in feet, then decide how deep you want the raised bed soil in inches. For odd shapes, split the area into rectangles and add them up using the number of areas box.

A typical depth is the full depth of the bed. These are common guidelines, not rules. Follow the advice for your project or product.

How it's calculated

Volume = length × width × depth. Depth is converted to feet (inches ÷ 12). Cubic feet are divided by 27 to give cubic yards. Weight uses a typical density of 1 tonnes per cubic metre. Real products vary with moisture and type, so treat weight as a guide.

Worked example

An area 8 ft long and 4 ft wide, filled 12 in deep: 8 × 4 × (12 ÷ 12) = 32 cu ft, or 1.19 cubic yards. That's 22 bags of 1.5 cu ft, or about 6 loads in a 6 cu ft wheelbarrow.

Common questions