How do you find the area of a triangle?

You can find the area using S = (a × h) / 2, Heron's formula, or using two sides and the angle between them.

What is Heron's formula?

Heron's formula calculates area using three sides: S = √(p(p-a)(p-b)(p-c)), where p is the semiperimeter.

Use S = (a × b × sin(γ)) / 2, where γ is the angle between the sides.

Yes, the calculator supports both integers and decimal numbers.

The calculator will show that such a triangle does not exist.

Calculate triangle area using base and height, three sides, or two sides and angle with step-by-step explanation.

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Calculation method

S = (a × h) / 2

Base a

Height h

Examples

CalcCore

Enter values and click “Calculate”.

This calculator helps you find the area of a triangle using different methods: base and height, three sides, or two sides with an angle.

Use base and height if available.

When all three sides are known.

Yes, with two sides and the included angle.

Yes, all numeric inputs are supported.

The calculator will warn you.