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# Map Coordinate System Converter Online

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Map Coordinate System Converter Online-summary

The Map Coordinate System Converter Online tool supports the mutual conversion of longitude and latitude coordinates between WGS84 coordinate system, gcj02 coordinate system (Mars coordinate system) and bd09 coordinate system.

Map Coordinate System Converter Online-instructions
Map Coordinate System Converter Online supports mutual conversion of longitude and latitude coordinates of WGS84 coordinate system, gcj02 coordinate system and bd09 coordinate system. Coordinate conversion supports single conversion and batch conversion.
1. This tool has a certain frequency limit, please use this tool reasonably. Anonymous : 60/IP*Hour, Normal user : 60/Hour, VIP : 720/Hour, Senior VIP : 720/Hour.
2. Input Coordinates:Fill in the longitude and latitude coordinates in the form of floating point numbers, with longitude in the front and latitude in the back. The east longitude is positive and the west longitude is negative. The north latitude is positive and the south latitude is negative. The longitude range is -180 to 180 and the latitude range is -90 to 90. During batch conversion mode, one record is filled in each line. VIP users can fill in up to 10000 lines of coordinates, while normal users can fill in up to 2 lines of coordinates.
3. Coordinate System:Select the coordinate system which the coordinates are located.
4. Precision : The number of digits reserved after the decimal point of the coordinate conversion result. The value range is [0, 15].
5. Click Convert to convert the input coordinates into WGS84, GCJ02 and BD09 coordinates at the same time.

### Example of coordinate convert results:Tiananmen in Beijing

1. WGS-84 longitude and latitude:116.391349,39.907375 (input coordinate)
2. GCJ02 longitude and latitude:116.39759019123527,39.90877629414095
3. BD09 longitude and latitude:116.40396302524593,39.915119833724745