Equilateral Triangle Calculator

Enter side length or height of triangle


Equilateral triangle -  a 3 sided geometrical figure that consists of 3 sides of equal length forming three internal angles of 60 degrees each.

Equation form:

h =a√3
a =2h
perimeter = 3 * a
area enclosed (A) =a²√3
Area(AI) of circle inscribed in equila-teral triangle with side a:
AI =π * a²
Area(AC) of circumscribed circle about equila-teral triangle with side a:
AC =π * a²

About Equilateral Triangle Calculator tool.

Remember this tool should be used only to calculate area, perimeter or volume of a figure. The results we provide are accurate, but rounded to the 12th decimal place. It accepts scientific notation and converts immediately.