Compost Calculator

Calculate compost volume needed to spread over a garden or lawn area.

Compost Volume
— cubic yards
To spread.

Usage Tip

A quarter inch top-dressing is plenty for an established lawn; rake it in so it reaches the soil rather than smothering the grass.

THE MATH
cubic yards = area × (depth ÷ 12) ÷ 27
Compost to top-dress a bed or lawn is the area times the spread depth, converted to cubic yards. One cubic yard equals 27 cubic feet.
Enter the coverage area and the depth to spread (1/4 to 1/2 inch for lawns, 1 to 2 inches for beds).
The result is cubic yards for bulk ordering.
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