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Calculate the Air of a Rectangle

Calculate the area of ​​a rectangle! All you have to do is use our online calculator with the explanatory formula! Discover geometry differently with Calculator Market!

What is the area of ​​a Rectangle?

What is called an area or surface is the internal measure of a geometric form. This measurement is expressed in square:

  • Square centimeter (cm 2)
  • Square meter (m 2)
  • Etc.

More about the rectangle: A rectangle is a quadrilateral (polygon with 4 sides) with 4 right angles. The sides of a rectangle are equal and parallel two by two.

The calculation of a surface is regularly used to calculate an area to be covered. Especially when you want to repaint your walls or change your tile: Before buying the material, it is recommended to know the surface to be developed to save money.

Formula for the area of a Rectangle Calculator

To calculate the area of ​​a rectangle (r), multiply the length (A) by the width (B). Thus, the formula is as follows:

Area = A X B

Take as an example a rectangle with a length of 20 cm and a width of 15 cm:

  • Area = 20 x 15
  • Area = 300 cm 2

To simplify the calculation, use our rectangle area calculator above. You simply enter the length then the width to get the surface (also called area). Attention, the result is expressed in the same unit as the one you entered, but it is square.