Contour map generator
Move the map to any place on Earth and the contour lines of the ground appear, every 10 m, 20 ft or whatever interval you choose. Every fifth line is an index contour, drawn heavier. Download the lines as GeoJSON or KML for QGIS, CAD or Google Earth.
Point at a line for its elevation.
Terrain: ~30 m global elevation data on our own server.
Contour Map Generator
Move the map to any place on Earth and the contour lines of the ground appear, every 10 m, 20 ft or whatever interval you choose. Every fifth line is an index contour, drawn heavier. Download the lines as GeoJSON or KML for QGIS, CAD or Google Earth.
How do I make a contour map of my land?
Search for the address or move the map to it and zoom in. The contour lines are drawn for the area on screen; choose the interval (for a small lot, 1 or 2 m, or 5 ft) and download them.
How accurate are the contours?
They are generated from ~30 m terrain models, so they show the shape of hills, valleys and slopes well, but not features smaller than about 30 m, like a ditch or a building pad. For construction, use a survey. Elevations come from our own copy of global ~30 m terrain models (the Mapzen terrain mosaic of SRTM, USGS NED, EU-DEM and others, with ocean depths), served from our own server.
What are index contours?
Every fifth contour line is drawn heavier, as on printed topographic maps, so you can count elevation quickly.
Which formats can I download?
GeoJSON (for QGIS, Leaflet, Mapbox and most GIS software) and KML (for Google Earth). Each line carries its elevation in meters and feet.
Is there a limit to the area?
The area on screen can be up to about 60 km across; zoom in to see finer intervals.
Is there an app?
Not for this tool yet. The nearest is Geo Elevation, on iPhone, iPad and Mac, which draws the elevation profile of a path, with the chart tied to the map, and saves it as a document. Paid. App Store · Mac App Store