Quadkey Converter

Convert Latitude & Longitude to Microsoft Quadkey and back with customizable zoom levels

Coordinates

Quadkey

Zoom Level (1-23)

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What is a Quadkey?

Quadkey is a hierarchical spatial indexing system used by Microsoft Bing Maps. It divides the Earth into quadrants (tiles) at multiple zoom levels using a quadtree structure.

Key Features

Quadtree Hierarchy: Each zoom level refines spatial resolution.
Tile-based Representation: Efficient for map rendering and data retrieval.
Compact Encoding: Uses a string-based hierarchical key.

How It Works

Each map tile has a unique Quadkey. At each zoom level, the grid is divided into 4 quadrants, represented by 0, 1, 2, 3.

Example:

The coordinates (40.7128, -74.0060) at zoom level 15 convert to:
031313212032231.

Use Cases

Mapping Services: Used in Bing Maps, OpenStreetMap, and Google Maps.
Tile-Based GIS: Efficient for retrieving map tiles dynamically.

Conclusion

Quadkeys provide an efficient, hierarchical way to index map tiles. They enable fast spatial lookups, making them ideal for online mapping and GIS applications.

Try our Quadkeys tool now to encode and decode Quadkeys instantly!