Equilateral Triangle Area Calculator

Calculate the area of an equilateral triangle by entering the side length. Choose from various units for your convenience.

Enter Side Length

Area

The area of the equilateral triangle is:

Result will appear here...

Formula Used

$$Area = \frac{\sqrt{3}}{4} \times side^2$$

Understanding Equilateral Triangles

An equilateral triangle is a triangle in which all three sides are of equal length and all three angles are equal to 60 degrees. It's a fundamental shape in geometry with various applications in mathematics, engineering, and design.

Area Formula

The area of an equilateral triangle can be calculated using the formula:

$$Area = \frac{\sqrt{3}}{4} \times a^2$$

Where 'a' is the length of a side of the equilateral triangle.

Example

If an equilateral triangle has a side length of 10 cm, its area would be:

$$Area = \frac{\sqrt{3}}{4} \times (10 cm)^2 = \frac{\sqrt{3}}{4} \times 100 cm^2 \approx 43.3 cm^2$$

This calculator simplifies this process, allowing you to quickly find the area for any given side length and unit.

You may also like these tools

Triangle Area Calculator Geometry

Triangle Area Calculator

Calculate the area of a triangle quickly and easily using our online tool.

triangle area calculator calculate triangle area
Open tool →
Area of Triangle Calculator - Easy & Accurate | EasyMathTools Geometry

Area of Triangle Calculator - Easy & Accurate | EasyMathTools

Calculate the area of a triangle quickly and easily using our online calculator.

area of triangle triangle area calculator
Open tool →
Trapezoid Area Calculator - Calculate Area Easily Geometry

Trapezoid Area Calculator - Calculate Area Easily

Calculate the area of a trapezoid online with our user-friendly calculator.

trapezoid area calculator area of trapezoid
Open tool →