Compost Top-Dress Calculator
Estimate compost for a shallow top-dressing layer.
Soil volume, compost, amendments, drainage, bed filling, and potting mixes.
Estimate compost for a shallow top-dressing layer.
Compost supplies organic matter and nutrients; topsoil supplies mineral soil structure. A raised bed usually needs a balanced growing medium rather than 100% of either.
Calculate cubic feet and cubic yards of soil for a rectangular raised bed.
Convert required cubic feet into a whole-number bag estimate.