Triangle Area Calculator

Calculate triangle area using base & height, three sides (Heron's formula), or two sides & included angle (SAS).

Calculation Method *

Output Unit

Base (b) *

units

Height (h) *

units

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Triangle Area

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Triangle Visualization

Graphical representation of your triangle

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Calculation Breakdown

Step-by-step area calculation

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Area

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Semi-perimeter

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s = (a+b+c)/2

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Triangle Type

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✅

Valid Triangle

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Formula Reference

Area formulas used

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Triangle Geometry Tips

Understanding triangle area

📐 Mathematical Disclaimer: This triangle area calculator uses standard geometric formulas. Results are for educational purposes. Ensure measurements use consistent units. For Heron's formula, the triangle inequality must be satisfied (a + b > c, a + c > b, b + c > a).