Rectangle Calculator

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

rectangle diagram

Similar Calculator

Area of rectangle calculatorSquare calculator
Diagonal of Rectangle CalculatorAll Math Calculator

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

Properties of a rectangle

☉ Opposite sides of a rectangle are equal in length, and the two angled sides on the parallelogram are each equal in length to its base.

☉ A rectangle is a four-sided object that has exactly 90-degree angles at each of its corners

☉ In a rectangle, because a diagonal bisects the rectangle into two congruent triangles, those two triangles will also be congruent to each other.

How to use this Rectangle calculator

Rectangle calculator is a tool with the help of which you can calculate the area of a rectangle, the diagonal of a rectangle and the perimeter of a rectangle. Enter the length of the rectangle and the width of the rectangle and click on the ‘calculate’ button.

More Calculator

Cuboid CalculatorCircle volume calculator