geoprimsField-grade geospatial math

Area

Areas on the ellipsoid.

This group measures the area and perimeter of a polygon on the WGS 84 ellipsoid, with geodesic edges, holes, and shapes that cross the antimeridian or circle a pole. Farmers, land managers, GIS analysts, and drone mappers use it for field and parcel areas. Start with polygon area. The pitfall is computing area from raw latitude and longitude as if they were flat x and y; a degree of longitude shrinks toward the poles.

I want to find the area and perimeter of a polygon

Guides that use these tools