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The page www.epsg-registry.org contains EPSG codes for different transformations (i.e. EPSG:1173, EPSG:1244 etc.).

Do you know about some GIS SW (online or desktop), which supports converting coordinates using these transformations?

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    Blue Marble's Geographic Calculator (and their other software), Esri's ArcGIS software (but we don't expose the IDs). PROJ4 and software built on it (GDAL, QGIS) will often hard-code a transformation into the +TOWGS84 parameter. – mkennedy Jul 27 '18 at 21:23
  • I believe that with the pipelines proj4.org/operations/pipeline.html# which are new to Proj4 5.0 you can build your own tailored transformation chains. – user30184 Aug 2 '18 at 12:12

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