Coordinate Converter
Convert coordinates between 6000+ coordinate reference systems instantly. Supports EPSG, GCJ-02, BD-09 and more.
Powerful Coordinate Conversion
Everything you need to convert coordinates accurately, including support for Chinese coordinate systems.
6000+ Coordinate Reference Systems
Access the full EPSG registry with over 6000 coordinate reference systems. From global standards like WGS 84 and Web Mercator to regional projections like UTM zones, Lambert conformal conic, and Japanese JGD2011 — find and convert between any CRS.
Chinese Coordinate Systems (GCJ-02 / BD-09)
Convert to and from China's mandatory offset coordinate systems. GCJ-02 (used by Amap/Gaode, Tencent Maps) and BD-09 (Baidu Maps) are built-in with high-precision iterative algorithms — a feature most international tools lack.
Browser-side Processing, Data Privacy Guaranteed
All coordinate transformations run entirely in your browser using Proj4js. Your coordinate data is never sent to any server. No account needed, no data stored — your coordinates stay private.
How to Convert Coordinates
Select Source CRS
Choose the coordinate reference system of your input coordinates from the dropdown. Popular options like WGS 84, Web Mercator, and Chinese CRS are listed at the top.
Select Target CRS
Choose the target coordinate reference system you want to convert to. Use the swap button to quickly reverse source and target.
Enter Coordinates
Type or paste your coordinates in the input area. Supports one coordinate per line for batch conversion. Format: longitude, latitude (or x, y).
Click Convert & Copy Results
Hit the Convert button to transform your coordinates. Results appear instantly in the output panel — click Copy to clipboard with one click.
Why Use Our Coordinate Converter
Batch Conversion
Convert multiple coordinates at once. Paste one coordinate per line for batch processing.
High Precision
Sub-meter accuracy for standard projections. Iterative algorithms for GCJ-02/BD-09 conversion.
Flexible Input
Accepts coordinates separated by comma, space, tab, or semicolon. Handles various numeric formats.
Works Offline
Once loaded, the converter works without internet. All calculations happen in your browser.
100% Free
No usage limits, no premium tiers for coordinate conversion. Professional results at zero cost.
Instant Results
Transformations complete in milliseconds. No waiting for server response or processing queues.