Triangle Area Calculator

Math Calculators

Find the area of any triangle given its base and height.

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Area

About This Tool

Works for all types of triangles. Enter the base length and vertical height to calculate the surface area instantly.

Frequently Asked Questions

The most common formula is $A = \frac{1}{2} \times \text{base} \times \text{height}$.

No. Height (altitude) must be the perpendicular distance from the base to the opposite vertex.

You can use Heron's Formula: $A = \sqrt{s(s-a)(s-b)(s-c)}$, where $s$ is the semi-perimeter.

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