Rectangle Calculator

Side ‘ a ‘= unit

Side ‘ b ‘= unit

Area of Rectangle (A)= square unit

Perimeter of Rectangle (P)= unit

Polygon Diagonals of the Rectangle (p)= unit


Rectangle Calculator is a free online tool that displays the area, perimeter and diagonal value of the rectangle. BYJU’S online rectangle calculator tool makes the calculation faster and it displays the area and perimeter of a rectangle in a fraction of seconds.

How to Use the Rectangle Calculator? 

The procedure to use the rectangle calculator is as follows:

Step 1: Enter the length “a” and breadth “b” in the input field

Step 2: Now click the button “Calculate” to get the area and perimeter

Step 3: Finally, the area and perimeter of a rectangle will be displayed in the output field

What is Meant by the Rectangle?

In mathematics, a rectangle is a 2D figure with four sides and four corners. It has four angles, each measuring 90 degrees. Thus, the two sides of a rectangle meet each other at right angles. The opposite side of the rectangle is parallel to each other and it should have the same measurements. The formula to calculate the area and the perimeter of a rectangle is given by the formula,

The area of a rectangle, A = Length × Breadth Square units

The perimeter of a rectangle, P = 2(Length + Breadth) Units


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