Compost and Mulch Calculator

How Much Compost Do You Need?

For mulching spread 1-3 inches of compost on beds in fall or spring.

As a soil amendment before planting new beds, use 1-3 inches dug or tilled into the soil. (Use 3 inches to improve sandy soils, or 1-2 inches for heavy clay soils).

How thick a layer do you want?

Size of area to mulch or amend (sq. ft.)

You will need:
1-cubic-foot bags or
1.5-cubic-foot bags or
2.2-cubic-foot bags or
2.5-cubic-foot bags or
3-cubic-foot bags or
cubic feet (bulk) or
cubic yards