Triangle Area Calculator
Calculate the area of a triangle from its base and height.
How to use this tool
- Enter base and height in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your area and the full breakdown beneath it.
Calculate triangle area using Area = (base × height) / 2.
Frequently asked questions
- How do you calculate the area of a triangle?
- Area = (base × height) / 2. The height must be perpendicular to the base.