# Area of Equilateral Triangle Calculator

'Area of Equilateral Triangle Calculator' is an online tool that is used to find the area of a given equilateral triangle.

## What is Area of Equilateral Triangle Calculator?

This calculator will get the side length of the triangle and give you the area in a few seconds.

## How to Use the Area of Equilateral Triangle Calculator?

Follow these steps which will help you to use the calculator.

**Step 1**: Enter the side length in the input box.**Step 2**: Click on "**Calculate**" to find the area of the equilateral triangle.**Step 3**: Click on "**Reset**" to clear the field and enter a new value.

## How to Find the Area of an Equilateral Triangle?

The area of an equilateral triangle can be found if one of the side length is known. As all sides and angles of an equilateral triangle are equal, the area of an equilateral triangle is given by :

\(Area = { \sqrt{3} \over 4} × (side)^2\)

**Solved Example:**

Find the area of an equilateral triangle whose side length is 3 units.

**Solution: **

Substituting the value in the given formula:

### Area of equilateral triangle = \({ \sqrt{3} \over 4} × (3)^2\)

= 0.43 × 9

= 3.897 square units.

Therefore the area of the equilateral triangle is 3.897 square units.

Now use the calculator to find the area of equilateral triangles whose side lengths are:

- Side length = 5 units
- Side length = 13 units