Find perimeter and area from side lengths.
Last Updated: 31 Mar 2026
Perimeter: 12
Area: 6
Triangle Calculator helps you find perimeter and area from side lengths. It is commonly used by finance teams, founders, individual planners for triangle calculator, heron formula, Triangle.
Triangle Geometry
Compute area and perimeter using Heron's formula.
Disclaimer: This calculator provides information only and is not financial, tax, or legal advice.