Area of Triangle Calculator (Heron's Formula)
Calculate the area of a triangle easily using Heron's formula. Input the lengths of three sides to find the area, visualize the triangle, and copy the result. Perfect for geometry calculations.
Enter Triangle Sides
Input the lengths of the three sides of the triangle to calculate its area using Heron's formula.
Result
Heron's Formula:
Area of Triangle:
square units
Triangle Visualization
Visual representation of the triangle with given side lengths.
Understanding Heron's Formula
Heron's formula is a method for calculating the area of a triangle when you know the lengths of all three sides. Unlike other area formulas that require the height or angles, Heron's formula only needs the side lengths.
First, calculate the semi-perimeter (s) of the triangle, which is half the sum of its sides:
Then, use this semi-perimeter in Heron's formula to find the area:
This formula is particularly useful when it\'s difficult to find the height of a triangle, or when you only have side lengths. It's widely used in geometry, surveying, and engineering.