Calculate the height, area, and other properties of an equilateral triangle. Enter the side length.
Height: 5.1962 Area: 15.5885 Side: 6.0000 Perimeter: 18.0000 Circumradius: 3.4641 Inradius: 1.7321
Formulas: h = a·√3/2. Area = a²·√3/4. R = a/√3. r = a·√3/6.
Equilateral Triangle Height
The height of an equilateral triangle is h = a·√3/2, where a is the side length. All sides are equal and all angles are 60° .
How to Use This Calculator
- Enter side length: The length of any side.
- Calculate: Click “Calculate” or press Enter.