Topsoil Calculator for Raised Beds
Estimate topsoil to fill a raised garden bed.
Raised beds are filled deep — commonly 8–12 inches — often as a blend of topsoil and compost. The calculator starts at 8 inches; enter the inside length and width of the bed below.
Topsoil Calculator
Estimate how much you need — and the cost.
- cubic feet 66.67
- cubic meters 1.888
- tons (US) 2.59
- tonnes 2.35
Tip: Mix in 25–30% compost with the topsoil for a rich raised-bed blend, and overfill slightly to allow for settling.
How it's calculated
1 cubic yard covers about 324 sq ft at 1 in / about 81 sq ft at 4 in deep; about 1.05 US tons per cubic yard.
See the full Topsoil Calculator for the complete how-to, unit conversions, and data sources.
Topsoil Calculator for Raised Beds FAQ
How much soil to fill a raised bed?
Multiply the inside length × width by the fill depth. A 4 × 8 ft bed filled 8 inches deep needs about 0.8 cubic yards.
What soil mix is best for raised beds?
A blend of roughly 70% topsoil and 30% compost gives good structure and nutrients for most vegetables.