Tile
Web map tiles and ground resolution.
Web map tiles divide the Web Mercator map into squares named by zoom, x, and y, or by a Bing quadkey. These tools find the tile for a point, give a tile's bounds, list its parent and children, cover a box with tiles, and give meters per pixel and map scale at any zoom. Map developers use them to debug tile URLs and size offline caches. Start with the tile-for-a-point tool, which shows XYZ, TMS, and quadkey at once. Pitfall: TMS counts rows up from the south and XYZ down from the north, so a mixed-up y lands in the wrong hemisphere.
I want to find the tile for a point, or a tile's bounds
- Map tile for a point (XYZ, TMS, quadkey)
The web map tile containing a point at a zoom: XYZ, TMS, and quadkey, with the ground resolution.
- Map tile bounds
The latitude and longitude bounds of a z/x/y tile or quadkey, with its XYZ, TMS, and quadkey forms; detect mode shows both y conventions.
I want to know the ground resolution and scale at a zoom
- Map ground resolution and scale
Meters per pixel and map scale for a Web Mercator zoom level at a latitude, for 256 or 512 pixel tiles.
I want to find a tile's parent and children, or the tiles over a box
- Map tile parent and children
The parent tile one zoom out and the four children one zoom in of a z/x/y tile or quadkey, in XYZ or TMS numbering.
- Map tiles covering a box
Every z/x/y tile at a zoom that touches a latitude and longitude box, across the antimeridian when west is greater than east, for pre-caching or download planning.