# Cube Calculator

A cube is defined as a 3-D solid object with six square faces. All the sides of a cube are of the same length.

## What is Cube Calculator?

'Cuemath's Cube Calculator' is an online tool that helps to calculate the surface area, volume, and diagonal of a cube. Cuemath's Cube Calculator helps you to calculate the surface area, volume, and diagonal of a cube within a few seconds.

## How to Use Cube Calculator?

Please follow the steps below on how to use the calculator:

**Step 1:**Choose a drop-down list to find the value of the surface area, volume, and diagonal of a cube.**Step 2:**Enter the length of the side of the cube in the given input boxes.**Step 3:**Click on the "**Calculate**" button to find the value of the surface area, volume, and diagonal of a cube.**Step 4:**Click on the "**Reset**" button to clear the field and enter the new values.

## How to Find Surface Area, Volume, Diagonal of a Cube?

The **surface area of the cube** is defined as the sum of the area of all the sides. The surface area of a cube is the number of unit squares that can be fit into it and it is measured in square units. The surface area of a cube is calculated using the formula:

** The surface area of a cube = 6a^{2} square units**

Where 'a' is the length of the side of the cube.

The **volume of a cube** is defined as the capacity of the cube or the measure of the amount of space it occupies. The volume of a Cube is calculated using the formula:

**The volume of a Cube = a ^{3 }cubic units**

Where 'a' is the length of the side of the cube.

The **diagonal of a cube** is defined as a line segment joining one corner to another but is not an edge is called a diagonal. The diagonal of a cube is calculated using the formula:

**Diagonal of a cube = √3a units**

Where 'a' is the length of the side of the cube.

**Solved Example:**

Find the surface area, volume, and diagonal of a cube if the length of the side is 9 units?

**Solution:**

Given: Side length(a) = 9 units

The surface area of cube = 6a^{2}

= 6 × 9^{2}

= 6 × 81

= 486 square units

The volume of a cube = a^{3 }

= (9)^{3}

= 9 × 9 × 9

=729 cubic units

Diagonal of a cube = √3a

= **√**3 × 9

= 15.59 units

Similarly, you can try the calculator to find the surface area, volume, and diagonal of a cube for

- Length of the side = 7 units
- Length of the side = 12 units