For surveyors, architects, farmers and homeowners

🗺️ Measure land on a map

Tap the map to place corners, or walk around the land adding your GPS position at each corner. Area and perimeter are computed on the Earth ellipsoid, and can be exported for Google Earth, GIS or CAD software.

Tip: drag a point to move it. The base map is OpenStreetMap; accuracy depends on your placement and, with GPS, on the phone's accuracy (often a few meters).

Geodesic computation: GeographicLib (MIT license). Map: © OpenStreetMap contributors.