Soil Calculator
Find how much soil you need for a raised bed or planter
Frequently Asked Questions
Multiply the bed's area by the fill depth (converted to feet), then add a settling allowance (10% is typical) since fresh soil compacts after watering.
A classic mix is 60% topsoil, 30% compost, and 10% aeration material (perlite or coarse grit), adjusted upward on compost for heavy feeders or sandy soil.
Most vegetables need at least 6-8 inches of soil depth; root vegetables and larger plants benefit from 12+ inches.
One cubic yard equals 27 cubic feet, so at a common 1.5 cu ft bag size, that's 18 bags — bulk delivery is usually cheaper above roughly 1 cubic yard.