Triangle Area Calculator

Calculate the area of a triangle using base/height or three sides (Heron's formula)

About This Tool

The Triangle Area Calculator computes the area of a triangle using base and height, or by applying Heron's formula with three side lengths.

Input either the base and height for direct calculation, or enter all three sides to use Heron’s formula. The tool calculates the area based on your inputs.

Ideal for geometry homework, construction projects, or any application requiring triangle area determination. No data is sent from your browser.

Frequently Asked Questions