# Triangle Perimeter Calculator

Find the perimeter of a triangle with this Triangle Perimeter Calculator.

## How do you find the perimeter of a triangle?

To find the perimeter, use this triangle perimeter formula:

Perimeter = Length of Side 1 + Length of Side
2 + Length of Side 3

Example: The perimeter of a triangle
with side lengths of 3 inches, 4

inches and 5 inches:

Triangle Perimeter = 3 + 4 + 5

Calculated out this gives a perimeter of 12
Inches.