# Perimeter of a Rectangle Calculator

Calculate the perimeter of a rectangle based on the entered height and width in the chosen units.

Result:

## How to use this calculator?

- Enter the length of the rectangle in your chosen unit.
- Enter the width of the rectangle in your chosen unit.
- Check the result you've obtained. If necessary, adjust its unit to your preference.

You can also see the detailed calculation process below the "result" field.

## How to calculate the Perimeter of a Rectangle?

To calculate the area of a rectangle, you need to add together both lengths of side "a" and both lengths of side "b".

**Perimeter of a Rectangle**= 2 * a + 2 * b

**Example:**Calculate the perimeter of a rectangle with a height of 7 cm and width of 12 cm.

P = 2 * a + 2 * b

P = 2 * 7 cm + 2 * 12 cm

P = 14 cm + 24 cm

P = 38 cm