Irregular Polygon Area Calculator


Online calculator to calculate the area of a non-self-intersecting irregular polygon with n vertices given by their Cartesian coordinates. The figure below shows an example of an irregular polygon with 6 vertices.

irregular polygon

How to use the calculator

Enter the number of points n that form the irregular polygon and the coordinates x and y of the vertices and press "calculate area". The vertices coordinates must be input in order: either clockwise or anticlockwise. The output is the area of the irregular polygon. In case you have a polygon with more than 10 vertices, divide it into smaller polygons find the area of each polygon and add them to obtain the total area.

n =


x1 =
, y1 =
x2 =
, y2 =
x3 =
, y3 =
x4 =
, y4 =
x5 =
, y5 =
x6 =
, y6 =
x7 =
, y7 =
x8 =
, y8 =
x9 =
, y9 =
x10 =
, y10 =
area =
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