TIP: Click on the map to get details for a tile!
Longitude and latitude coordinates used by GPS devices for defining position on Earth using World Geodetic System defined in 1984 (WGS84).
HINT: WGS84 geodetic datum specify lon/lat (lambda/phi) coordinates on defined ellipsoid shape with defined origin ([0,0] on a prime meridian).
Global projected coordinates in meters for entire planet. Used for raster tile generation in GIS and WM(T)S services.
HINT: Simpler spherical calculation are used instead of ellipsoidal. Mercator map projection deforms size (Greenland vs Africa) and never shows poles.
Zoom-specific pixel coordinates for each level of the pyramid. Top level (zoom=0) has usually 256x256 pixels, next level 512x512, etc.
Devices calculate pixel coordinates at defined zoom level and determine visible viewport for area which should be loaded from servers.
Coordinates of a tile in the pyramid. There is one tile on the top of the pyramid, than 4 tiles, 16 tiles, etc. All tiles have the same size, usually 256x256 pixels.
Only the relevant tiles loaded and displayed for the area of interest / viewport.
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Open Source project for visualisation of all coordinate system of a world. Convert coordinated online, get coordinates from a map in different projections, browse the coordinate database.
Look at Spherical mercator in EPSG.io
Transform coordinates from WGS84 to EPSG.io
Source code for utilities for conversion between tiles and coordinates
python globalmaptiles.py [zoom] [lat] [lon]