Area and Volume Formulas Made Simple
The essential area, perimeter and volume formulas for circles, rectangles, triangles, spheres and cylinders — what they mean, how to handle composite shapes, and how to keep units straight.
Cube Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Volume
64.0000
- Surface area
- 96.0000
- Face diagonal
- 5.6569
- Space diagonal
- 6.9282
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Cube Calculator
The Cube Calculator works out your volume, along with 3 related figures in an instant. Enter edge length and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the edge length.
- Read off your volume, together with surface area, face diagonal and space diagonal — the calculator updates automatically, with no button to press.
Formula
The Cube Calculator uses the formula:
Volume = Edge length ^ 3
Worked example
For example, with edge length of 4 units, the volume is 64.0000.
| Edge length | 4 units |
|---|
| Volume | 64.0000 |
|---|---|
| Surface area | 96.0000 |
| Face diagonal | 5.6569 |
| Space diagonal | 6.9282 |
Results are estimates for educational use, not professional advice.
Key terms explained
- Surface area
- The total area of all the outer faces of a three-dimensional object.
- Volume
- The amount of three-dimensional space an object occupies, measured in cubic units.
- Area
- The amount of two-dimensional space a shape covers, measured in square units.
Frequently asked questions
Cube the edge length: V = s³. A cube with a 4-unit edge has a volume of 64 cubic units.
A cube has six equal square faces, so its surface area is 6s². For a 4-unit edge that is 96 square units.
The face diagonal crosses one square face and equals s√2. The space diagonal runs corner to corner through the cube and equals s√3.
No. A square is a flat 2D shape; a cube is the 3D solid made of six square faces.
The Cube Calculator uses the formula: Volume = Edge length ^ 3. For example, with edge length of 4 units, the volume is 64.0000.
Enter the edge length. Read off your volume, together with surface area, face diagonal and space diagonal — the calculator updates automatically, with no button to press.
Related guides
Cube Table: Volume by Edge length
Reference table of volume for Cube across a range of edge length values — exact, engine-computed figures you can read off at a glance.
How to Calculate Cube: Formula, Steps & Examples
Learn how to calculate Cube — the formula explained step by step, with worked examples and a free calculator to check your answer.