Cube Volume Calculator
Calculate the volume of a cube instantly. Enter the side length and get the volume in cubic units. Ideal for geometry, packaging, and construction projects.
How to use this tool
- Enter side length in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your volume and the full breakdown beneath it.
Formula
V = s^3
How it works
Multiply the side length by itself three times: V = s³.
Worked example
Cube with side 4 units
- Identify side length: s = 4
- Apply formula: V = 4^3
- V = 4 x 4 x 4 = 64
Volume = 64 cubic units
Common mistakes to avoid
- Multiplying the side by 3 instead of cubing it (s x 3 vs s^3), confusing exponentiation with multiplication.
- Entering one face's area instead of the side length; if you know the face area, take its square root to get s.
- Reporting the surface area (6 x s^2) instead of the volume (s^3) when the question asks for interior space.
Key terms
- What is a cube?
- A cube is a three-dimensional solid with six equal square faces.
- What unit is volume measured in?
- Volume is measured in cubic units, e.g. cm^3 or m^3.
Frequently asked questions
- I know the volume. How do I find the side length?
- Take the cube root: s = V^(1/3). For example, a volume of 27 gives s = 3.
- What is the surface area of a cube?
- Surface Area = 6 x s^2. There is no fixed ratio between surface area and volume; it depends on s.
- Can I use this for a box that is not a perfect cube?
- No. All three sides must be equal. For differing dimensions use the Rectangular Box Volume Calculator.