Equilateral Triangle Calculator

Area, height and perimeter of an equilateral triangle.

Area 15.588

Height 5.196

Perimeter 18

Formula: area = (√3 ÷ 4) × side²

Step-by-step with your numbers:

1. Values used:

2. Side length = 6

4. Area = 15.588

5. Height = 5.196

6. Perimeter = 18

Did we solve your problem today?

All-equal-sides triangle measurements.

The math behind it

area = (√3 ÷ 4) × side²; height = (√3 ÷ 2) × side.

Side 6 → area 15.59, height 5.20.

Angles?

All three are 60°.