📐 Triangle Calculator
Quickly calculate triangle area and perimeter
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Area
📏 Perimeter—
📊 Result Chart
❓ FAQ
How to calculate triangle area?
Area = base × height ÷ 2. Or use Heron's formula: with sides a,b,c, s=(a+b+c)/2, area=√(s(s-a)(s-b)(s-c)).
What is Heron's formula?
Used when you know all three sides. Semi-perimeter s=(a+b+c)/2, area=√(s(s-a)(s-b)(s-c)). Works for any triangle.
What is Triangle Calculator?
Triangle Calculator is a free online tool that runs entirely in your browser. No download or signup needed — enter Base and Height to get results instantly. All data is processed locally.
Use Cases
- Convert units quickly when working with international measurements
- Translate metric and imperial units while reading foreign materials
- Verify conversion results in engineering or scientific work
- Quick conversions on mobile without searching for formulas
Key Features
- Completely Free: No registration, no limits
- Privacy Safe: Data never leaves your browser
- Cross-Platform: Any modern browser
- Zero Dependencies: Open and use