Triangle Calculator Guide
Calculate triangle area and perimeter from common measurements.
Important Note
This tool assumes a simple triangle input with side lengths for perimeter.
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Triangle Calculator
Triangle calculator for area and perimeter using base, height, and side lengths.
Geometry
Fast Calculation
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Triangle Calculator
Enter the triangle base, height, and side lengths to calculate area and perimeter.
Result
0
Ready to calculate
Working
Formula
Area = (base × height) ÷ 2, and perimeter = a + b + c.
Use Case
Useful for geometry homework, measurement checks, and quick school calculations.
Tip
Use consistent units for every value you enter.