Free online rectangle calculator – Calculate the area, perimeter, and diagonal of a rectangle with our easy-to-use Rectangle Calculator. Simply enter the length and width of the rectangle and get instant results

## What is a rectangle?

The rectangle is a basic shape with four straight sides and four right angles. It is a parallelogram, and its opposite sides are parallel and equal in length. A rectangle with four sides of equal length is a square.

check also- square meter calculator

## Rectangle formula

- Area of a rectangle = length x breadth = a x b
- Perimeter of a rectangle = 2(length + breadth) = 2(a + b)
- Diagonal of a rectangle = √(length²+breadth²) = √(l²+b²)
- Where a→ length and b→ breadth