Triangle Perimeter Calculator

Calculate the perimeter of a triangle with ease.

Calculator

Enter Triangle Dimensions

Table of Contents

1 What is Perimeter?
2 Perimeter Formula
3 How to Calculate Perimeter
4 Practical Examples
Concept

What is Perimeter?

The perimeter of a triangle is the total distance around the triangle. It's the sum of all three sides of the triangle, measured in linear units such as meters, centimeters, inches, or feet.

Formula

Perimeter Formula

Triangle

P = a + b + c

where a, b, and c are the lengths of the three sides

Steps

How to Calculate Perimeter

  1. 1
    Measure all three sides of the triangle
  2. 2
    Add the lengths of all three sides together
  3. 3
    The sum is the perimeter of the triangle
Examples

Practical Examples

Example

A triangle has sides of 3, 4, and 5 units.

P = a + b + c

P = 3 + 4 + 5

P = 12 units

Tools

Geometry Calculators

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