Volume of Rectangle
Interactive Calculator

Cube Volume Calculator

Calculate the exact volume of any perfect cube by entering a single edge length.

V = a^3
a = ?
Diagram updates instantly as you type.

What is a Cube?

A perfectly symmetrical 3D shape.

A cube is a three-dimensional solid object bounded by six square faces, with three meeting at each vertex. All edges of a cube are of equal length.

Key Information
Shape Focus
cube volume calculator

How to Find the Volume of a Cube

Calculating cube volume is the simplest 3D volume calculation.

1
Measure the length of any single edge of the cube.
2
Multiply that number by itself.
3
Multiply the result by the edge length one more time (cubing the number).

Cube Volume Formula

The simplest volume equation.

V = a^3
V Volume
a Edge Length

Where 'V' is the volume and 'a' is the length of any edge of the cube.

Frequently Asked Questions

Do I need to know the length, width, and height separately?

No, because for a perfect cube, the length, width, and height are all exactly the same.

What if I only know the diagonal of the cube?

You can calculate the side length 'a' using the formula a = d / √3, where 'd' is the diagonal, and then calculate the volume.

How do I calculate surface area from volume?

First, take the cube root of the volume to find the edge length, then use the formula A = 6a² to find surface area.

Is a dice a perfect cube?

Most standard dice are perfect cubes, with rounded edges for better rolling.