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Topsoil Calculator

Volume and bags of topsoil for a garden bed.

Compute the volume of topsoil needed to cover a rectangular bed to a target depth, plus the number of standard 40 L bags.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

m
m
m
L

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Volume = L × W × depth (in m³). 1 m³ = 1,000 L.

In depth

Compute the volume of topsoil needed to cover a rectangular bed to a target depth, plus the number of standard 40 L bags.