Area of an Octagon Calculator is a free online tool that displays the area of octagon for the given side length. CoolGyan’S online area of an octagon calculator tool makes the calculation faster, and it shows the area of the octagon in a fraction of seconds.

## How to Use the Area of an Octagon Calculator?

The procedure to use the area of an octagon calculator is as follows:

**Step 1:** Enter the side length in the input field

**Step 2:** Now click the button “Solve” to get the area

**Step 3:** Finally, the area of octagon for the given side will be displayed in the output field

### What is Meant by the Area of Octagon?

In geometry, an octagon is a two-dimensional geometrical plane figure. Area of an octagon is the region covered by an octagon in a two-dimensional plane. In other words, it is the total space occupied inside the boundary of an octagon. The measurement unit for the area is square units. If all the sides of an octagon are equal, then it is called a regular octagon. The area of an octagon formula is given by:

Area of a regular octagon, A = 2a^{2} (1 + √2) square units

Here,

a = Length of the sides