FTFreeTools
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Coordinate Conversion

Convert between WGS-84, GCJ-02 and BD-09, and see how many metres each system shifts a raw GPS point.

Runs in browserCoordinatesMaps

Last changed in v0.9.5

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How to use

  1. Paste coordinates (longitude first), then pick the source and target system.
  2. Below the result you get all three systems side by side, plus how many metres GCJ-02 and BD-09 shift a GPS point.
  3. Coordinates outside China are left untouched — GCJ-02 only applies inside the mainland.

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