What tile scheme does this use?

Standard slippy-map / OSM tile numbering (Web Mercator, EPSG:3857), the same scheme used by OpenStreetMap, Google Maps and MapLibre.

What happens near the poles?

Latitude is clamped to ±85.0511°, the Web Mercator projection limit used by every standard tile server.

Convert longitude/latitude to a slippy-map tile x/y/z, and back.

Longitude

Latitude

Zoom

x: 163, y: 395, z: 10

-122.695313, 37.996163

Runs entirely in your browser - nothing is sent to a server.

1
Pick a direction

Enter longitude/latitude + zoom, or enter tile x/y/z - both directions work.
2
Read the result

The other side updates instantly using standard Web Mercator tile math.

What tile scheme does this use?: Standard slippy-map / OSM tile numbering (Web Mercator, EPSG:3857), the same scheme used by OpenStreetMap, Google Maps and MapLibre.
What happens near the poles?: Latitude is clamped to ±85.0511°, the Web Mercator projection limit used by every standard tile server.