From OpenStreetMap Wiki
Jump to navigation Jump to search

Raw OSM data (found in planet.osm and extracts) is in WGS-84.

Most slippy maps, including OSM's main slippy map layer, are projected in Web Mercator projection.

For clarification on projections, see: <> <> For information on the projection and converting between lon/lat and tile formats, see Slippy map tilenames.


  • PROJ — command-line tools and library

See also