Ad Space
Math Calculators
Heron's Formula Calculator
Calculate a triangle's area using only its three side lengths with Heron's formula, each side and result in the unit of your choice.
Area
—
Perimeter
—
Ad Space — 300×250
About the Heron's Formula Calculator
Heron's formula finds a triangle's area from its three side lengths alone, without needing an angle or height. Each side has its own unit selector, and so does the area and perimeter — mix units freely and the calculator converts everything automatically.
Formula: s = (a+b+c)÷2 · Area = √(s(s−a)(s−b)(s−c))
Ad Space