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Polygon Area, Perimeter & Centroid

Find the area, perimeter, and center of gravity of any polygon.

Enter the corner coordinates of a polygon, one per line, in order around the shape. The tool returns the geodesic area, the perimeter, and the centroid (center of gravity). Four points give you a quadrilateral; three give a triangle; add as many as you like. Accepts DDM, DD, DMS, and the other formats the converter understands.