Quadkey / Tile XYZ Helper
Bridge a lat/lng point to tiled web map concepts used by many basemap systems.
By Aryan Khan, Founder & Editor · Updated October 2026
XYZ and quadkeys are two ways to address map tiles. The coordinate workspace here does not calculate either; dedicated tile tools are linked below.
How to use Quadkey / Tile XYZ Helper
Use the coordinate workspace for supported global formats, or choose a linked dedicated tile calculator.
XYZ tile addresses and quadkeys identify tiles in a map pyramid. This workspace does not calculate either; use the dedicated linked tile tools for those conversions.
- 1Pick a location.
- 2Use coordinates with your tile documentation.
What people use Quadkey / Tile XYZ Helper for
1. Bing Maps data work
Bing-style quadkey datasets and XYZ tiles use related addressing. The dedicated converters linked below handle these values; this workspace does not.Quadkey to XYZ Tile Converter and its reverse — handle strings you already hold.
2. Cross-platform debugging
A feature can appear one tile off between systems. Compare XYZ and quadkey addresses with a dedicated tile tool.
3. Learning the tile system once
Comparing addresses at several zooms can help explain the tile pyramid; use a dedicated tile calculator for the values.
4. Dataset joins by tile
Tile-keyed imagery and statistics may be joined using a validated XYZ-to-quadkey conversion.
Worked examples
032010110132021 decodes digit by digit from the top of the pyramid: each digit (0–3) picks a quadrant — NW, NE, SW, SE in the quadkey convention — and the string's length IS the zoom (15 digits, zoom 15).
Drop the last digit and you hold the parent tile at zoom 14; drop four, the zoom-11 ancestor. Quadkeys make tile genealogy a string operation — the property databases love.
Two dialects, one grid
XYZ and quadkey describe the same pyramid.
| Property | XYZ | Quadkey |
|---|---|---|
| Address | Three numbers (z, x, y) | One string of 0–3 digits |
| Zoom | The z value | The string length |
| Parent tile | Halve x and y | Drop the last digit |
| Home systems | OSM/Google/MapLibre tiles | Bing Maps and quadkey datasets |
| Origin | Northwest corner; y grows south | Same grid, interleaved bits |
A quadkey encodes tile x and y bits as base-4 digits. The coordinate workspace on this page does not calculate tile addresses.
How to interpret the result
The most common errors come from using a correct result to answer the wrong geographic question. Keep these points in mind for Quadkey / Tile XYZ Helper:
- Match precision to source: consumer GPS earns about five decimals; quoting six or seven implies a survey you didn't do. Rounding deliberately is honesty, not loss.
- Adopt one storage format — decimal degrees, WGS84, five or six decimals — for every dataset you own, and convert at the edges for display. Mixed notations in one column are the root of nearly every coordinate bug.
Limits & appropriate use
Coordinates are lossless in principle and lossy in practice, and every loss is human: swapped axes, wrong hemispheres, datum relics, precision theatre. The converters eliminate the notation problem completely — DMS, UTM, MGRS and Plus Codes are exact translations on WGS84 — but they cannot eliminate the provenance problem: a number without its datum and its source is a rumour. Old NAD27-era documents, hand-typed sheets and seven-decimal CSVs each carry their own failure signature, and the honest tool answers with validation errors and visible pins rather than silent corrections.
The practical boundary is therefore organisational, not mathematical: teams that standardise storage (decimal, WGS84, sane precision) and ritualise the map check enjoy a lossless system; teams that don't accumulate expensive folklore. For work beyond consumer frames — control points, machine guidance, legal description — the escalation is geodetic: licensed surveyors, published transformations and national datums. Everything between a pasted waypoint and that door is exactly where this toolset lives.
- Datum-critical legacy data → published grid transformations (NTv2/HTDP).
- Control points and machine guidance → licensed geodetic survey.
- Aviation/marine charts → the chart's own datum and notation, verbatim.
Data & methodology
The shared converter handles common coordinate formats but does not calculate or decode quadkeys or XYZ tiles.
For source details, licences and model limitations, see Data Sources and Methodology.
Key terms worth knowing
- Datum
- The reference shape model (WGS84 for GPS) that coordinates are angles against.
- DMS
- Degrees-minutes-seconds notation; 1° = 60′ = 3600″.
Editorial guidance: MapBench explains the method and limitations so the tool can be used as a transparent reference, not as a black-box answer. For legal boundaries, safety-critical routing, surveying, engineering, regulated decisions or official statistics, verify the result with the responsible authority or a qualified professional.
Category: Coordinates. Results are intended for everyday analysis and planning unless a page explicitly states otherwise.
Method, assumptions & limits
- This tool’s method
- The shared converter handles common coordinate formats but does not calculate or decode quadkeys or XYZ tiles.
- Before relying on the answer
- Record the coordinate order, signs, format and datum where specified. In GeoJSON, positions are longitude first; many input forms ask for latitude first.
- What the result cannot establish
- A format conversion preserves the source measurement's uncertainty. Extra digits do not improve the original GPS fix.
Coverage: Worldwide. Search, basemap and external data requests may use third-party services; browser-based does not mean every operation is offline. Read the source and licence notes, calculation methodology and privacy policy. If a result looks inconsistent, report a correction with the inputs and mode used.
Frequently asked questions
Clear answers about the calculation, accuracy and appropriate use.
Exact tile URL?
Tile schemes differ by provider — confirm zoom and origin.
Which datum do these coordinate tools use?
MapBench location tools generally use WGS84 latitude and longitude, the same global reference system commonly used by GPS and web maps.
Do more decimal places always mean better accuracy?
No. More digits increase numeric precision, but they cannot improve the accuracy of the original GPS, survey or source data.
Can I copy the result into GIS software?
Usually yes. Check the format, axis order and datum expected by the destination software before importing.
What is a quadkey, plainly?
A tile's address written as one string: each digit narrows to a quadrant, zoom equals length. Bing Maps popularised it; tile-keyed databases adopted it.
Why do digits only run 0–3?
Each level has four children. Two bits per level — one from x, one from y — make one base-4 digit.
Same grid as Google/OSM tiles?
Yes — the Web Mercator slippy pyramid. Quadkey and XYZ are two notations for identical tiles (modulo the TMS y-flip some stacks apply).
Which zoom should I use?
Use the zoom associated with your data. This workspace does not calculate tile addresses; use a dedicated tile calculator.
Quadkey for a region?
A region may cover multiple tiles. This workspace does not calculate the tiles or quadkeys for it.
Precision of a quadkey?
A quadkey names a whole tile, not a point — at zoom 15 in New York, a ~926 m square. Finer zooms name smaller squares.
Leading zeros matter?
Entirely — '032...' and '32...' are different tiles at different zooms. Never store quadkeys as numbers; the zeros are load-bearing.
Related tools and resources
Convert strings: the Quadkey to XYZ Tile Converter and XYZ Tile to Quadkey Converter; find tiles: the Latitude Longitude to Map Tile Calculator.
More free tools
Sources, methodology & editorial trust
- ✓ Browser-first processing where supported
- ✓ External sources are documented
- ✓ No account required for public tools
- ✓ Review data sources
Calculations are documented with their assumptions, limitations and source context rather than presented as unexplained answers.
Reviewed and maintained by Aryan Khan, Founder & Editor of MapBench.
Part of our coordinates hub
Quadkey / Tile XYZ Helper sits in the coordinates cluster, alongside 63 other tools that answer neighbouring questions with different methods or datasets.
You may also need
When this answer is only part of the job, these clusters cover the next step.
Read the guide behind this tool
Understanding GPS Coordinates: Formats, Datums and Precision — A practical guide to latitude/longitude: what decimal degrees and DMS really mean, why datums matter, and how many decimal places you actually need.