How to Calculate Cube Calc
What is Cube Calc?
A cube calculator computes volume, surface area, face diagonal, and space diagonal of a cube from its edge length. A cube is a regular hexahedron — all 6 faces are equal squares.
Formula
Volume = side³; Surface Area = 6 × side²; Diagonal = side × √3
- s
- Side length (units)
- V
- Volume (cubic units)
- SA
- Surface area (square units)
Step-by-Step Guide
- 1Volume = s³
- 2Surface area = 6s²
- 3Face diagonal = s√2
- 4Space diagonal = s√3
Worked Examples
Input
Cube edge = 5 cm
Result
Volume = 125 cm³; SA = 150 cm²; Face diagonal = 7.07 cm; Space diagonal = 8.66 cm
Frequently Asked Questions
What's the difference between surface area and volume?
Volume = interior space (cubic). Surface area = total outer surface (square). Different units.
How does doubling the side length affect volume?
Doubling side length increases volume 8 times (2³). Scales with cube of linear change.
What's the space diagonal of a cube?
Diagonal across the cube (corner to opposite corner) = side × √3 ≈ 1.732 × side.