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Topsoil

Calculate topsoil volume and bag count for a garden bed.

Built and maintained by The NumberPrism Editorial TeamEditorial policy

Your details

Bed length (ft)

Bed width (ft)

Depth (in)

Bag size

Results update as you type. The formula and assumptions are explained below the calculator.

Topsoil volume

3.7 cu yd

Bed area200 sq ft

Volume in cubic feet100 cu ft

Bags at chosen size134 bags

Approximate weight9,000 lb

Topsoil settles by roughly 10%, so order a little extra. Bulk delivery is usually cheaper than bags once the job passes about one cubic yard.

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What does this tool do?

Topsoil volume is bed area multiplied by depth, usually ordered in cubic yards or bags. This calculator reports both, plus an approximate weight so you can judge delivery versus bagged material.

The Formula

Volume (ft³) = Length × Width × Depth ÷ 12; Cubic yards = Volume ÷ 27

Frequently Asked Questions

How much does a cubic yard of topsoil cover?

One cubic yard covers 100 sq ft at 3 in deep, or 50 sq ft at 6 in.

How much does topsoil settle?

Expect 10–15% settlement after watering; order slightly more and top up after the first rain.

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