How it works
Find volume, total surface area and space diagonal of a cube from its edge length.
V = a³; S = 6a²; d = a√3
Worked example
Show example inputs and result
Edge: 4.
- Volume
- 64
- Surface area
- 96
- Space diagonal
- 6.92820323
Questions and answers
Why are some results rounded?
Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.
Are my inputs sent to a server?
The calculator processes inputs in your browser. Its code does not send your values to a server.
Method reviewed: October 8, 2026 · Methods & accuracy