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Triangle Area by Heron Formula

Calculate area using the triangle area by heron formula formula.

Area: -
Visual representation

Triangle Area by Heron Formula diagram

The diagram updates with your entries and is illustrative, not necessarily drawn to scale.

Calculation explained

How this result was calculated

The formula, your substituted values, and the evaluated result are shown below.

Reference: Formulae and Tables, State Examinations Commission (2014), page 10.
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How the Triangle Area by Heron Formula works

This calculator applies the formula given in Formulae and Tables, State Examinations Commission (2014), page 10. Enter values in consistent units.

Formula and inputs

Math.sqrt(s × (s-a) × (s-b) × (s-c))

Inputs: Semiperimeter s, Side a, Side b, Side c.

Using the result

The result is rounded to 4 decimal places. Check units, assumptions and significant figures before using the answer.

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