The Area of a Triangle from Length of Three Sides calculator computes the area of a triangle given the length of the triangle's three sides using Heron's formula.
INSTRUCTIONS: Choose units and enter the following:
Area (A): The calculator returns the area in square meters (m2). However, this can be automatically converted to other area units (e.g. square feet) via the pull-down menu.
`A = sqrt((a+b+c)/2((a+b+c)/2-a)((a+b+c)/2-b)((a+b+c)/2-c)) `
The calculator makes a check that no one side is greater than the sum of the other two. In that case, it is impossible to have a triangle.