Geometry

Equilateral Triangle Calculator

Area, height, and perimeter of an equilateral triangle from side s.

Area

Height

Perimeter

This free Equilateral Triangle Calculator covers Area, height, and perimeter of an equilateral triangle from side s.

Height is (√3/2)s; area is (√3/4)s². Other geometry tools are linked below.

Equilateral Triangle Calculator — how it works

Area, height, and perimeter of an equilateral triangle from side s. Typical inputs are Side s. How it works beside the form states the identity the Equilateral Triangle Calculator applies.

FAQ

How do I use the Equilateral Triangle Calculator?

Open the Equilateral Triangle Calculator, fill Side s, and read the result. Height is (√3/2)s; area is (√3/4)s².

What formula does the Equilateral Triangle Calculator use?

The Equilateral Triangle Calculator uses the identity in How it works. In words: Height is (√3/2)s; area is (√3/4)s².

More tools in Geometry and popular picks.