Triangle Area Calculator
What is a Triangle Area Calculator?
A Triangle Area Calculator is a tool that helps you determine the area of a triangle using different formulas based on the given measurements. The most common formula is:

where:
- A = Area of the triangle
- Base = The bottom side of the triangle
- Height = The perpendicular distance from the base to the opposite vertex
Other methods include:
-
Heron's Formula (when all three sides are known):
where ss s is the semi-perimeter, calculated as:
and a,b,c are the three sides of the triangle.
-
Trigonometric Formula (when two sides and the included angle are known):
Why Use a Triangle Area Calculator?
- Quick calculations – No need for manual computation.
- Minimizes errors – Ensures precision in results.
- Useful for various fields – Geometry, architecture, engineering, physics, and even art.
How Does It Work?
- Enter the required values (base & height, three sides, or two sides & an angle).
- Click Calculate – The tool applies the appropriate formula.
- Get the area – The result is displayed instantly.
When to Use It?
- In geometry problems involving triangles.
- For construction and design, such as calculating roof areas.
- In surveying and land measurement to determine land plots.
- In physics and engineering, where triangular shapes are used in structures and mechanics.