Perimeter and Area of a Triangle Given its Vertices

Online calculator to calculate the area and perimeter of a triangle given the coordinates of its vertices. The distance formula is used to find the distances between vertices then these distances are used to find the perimeter and area of the triangle.

How to use the calculator

Enter the x and y coordinates of the three vertices A, B and C of the triangle and press "calculate". The outputs are the area and perimeter of the triangle.

A ( , )
B ( , )
B ( , )

Area =
Perimeter =

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