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Cube Volume Calculator

Volume and diagonals of a cube from its edge length.

Compute the volume, surface area, face diagonal, and space diagonal of a cube from its edge length.

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

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

V = a³, surface = 6a², face diagonal = a√2, space diagonal = a√3.

In depth

Compute the volume, surface area, face diagonal, and space diagonal of a cube from its edge length.