Calculyn

Cubic Yards Calculator

Convert length, width and depth into cubic yards for soil, gravel, mulch or concrete.

ft
ft
in

Results update as you type.

Material needed

1.11cubic yards
Cubic feet
30
With 10% extra for settling
1.22cubic yards
Material needed1.11

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Quick answer

A 12×10 ft bed at 3 inches deep needs 1.11 cubic yards — order about 1.25.

How it works

One cubic yard is 27 cubic feet. Multiply length × width × depth (converting inches to feet), then divide by 27. Order about 10% extra — material settles and compacts.

Formula

Cubic yards = L(ft) × W(ft) × D(in) ÷ 12 ÷ 27

Assumptions & limitations

  • Results are rounded for display.

Frequently asked questions

How much does a cubic yard weigh?

It depends on the material: topsoil is roughly 1–1.3 tons per yard, gravel about 1.4–1.7 tons.