About the Cube Calculator
Volume, surface area and space diagonal of a cube from the edge length.
Also known as: cube volume, volume of a cube, surface area of cube.
How to use this calculator
- Enter edge length.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
V = a³ · A = 6a²
Worked example
Using the values pre-filled in the calculator above:
- Edge length = 4
the calculator returns:
- Volume: 64
- Surface area: 96
- Face diagonal: 5.656854
- Space diagonal: 6.928203