A triangle area helps you calculate triangle area values accurately and instantly.
Calculate triangle area using base & height or Heron's formula with three sides.
Base × Height Method:
Area = (base × height) / 2
Heron's Formula (three sides):
s = (a + b + c) / 2
Area = √(s(s-a)(s-b)(s-c))
The base-height method is simplest when you know the perpendicular height. Heron's formula works when you only know the three side lengths.
The Triangle Area Calculator uses standard formulas to calculate your results. Enter your values in the input fields and click Calculate to see instant results.
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The Triangle Area Calculator uses verified formulas and provides accurate estimates for informational purposes. Results are calculated instantly in your browser.