Heron's formula calculator

Given the three lengths of any triangle, Heron's formula calculator will compute the area for you.

A-triangle-image

Triangle Area Calculator

Step-by-Step Calculation

What is Heron's Formula?

Heron's Formula is a mathematical equation that allows you to calculate the area of a triangle when you know the lengths of all three sides.

\[ Area = \sqrt{s(s - a)(s - b)(s - c)} \] \[ s = \frac{a + b + c}{2} \]

Unlike the basic formula, Heron's Formula doesn't require knowing the triangle's height, making it exceptionally versatile for triangles where the height is difficult to determine.

s is the semi-perimeter of the triangle and a, b, and c are the lengths of the triangle's sides.

The Origins of Heron's Formula

Heron's Formula is named after Hero of Alexandria, a pioneering Greek engineer and mathematician from the first century AD. Hero is renowned for his contributions to mechanics and mathematics. While the exact circumstances of the formula's invention are not thoroughly documented, it stands as a testament to the enduring legacy of ancient mathematical ingenuity. Hero's work aimed to simplify complex calculations, making geometry more accessible and applicable to real-world problems.

Why Use Our Calculator?

Our Calculator leverages Heron's Formula to provide instant, accurate results with a user-friendly interface. Here's why you'll love it:

  • The calculator is easy to use. Simply input the lengths of the three sides, and let the calculator do the rest.

  • Gain a deeper understanding with detailed, step-by-step calculations that demystify Heron's Formula.

  • Perfect for students and educators seeking a practical tool to reinforce geometric concepts.

Buy a comprehensive geometric formulas ebook. All geometric formulas are explained with well selected word problems so you can master geometry.

Geometry ebook


Tough algebra word problems

100 Tough Algebra Word Problems.

If you can solve these problems with no help, you must be a genius!

Math quizzes

 Recommended