When I open a layer projected in ArcGIS with EPSG:25831, QGIS detect it as EPSG:3043.

Apparently everything is where it is supposed to be, and checking both EPSG:25831 and EPSG:3043 they appear to have the same bounds.

Is there any reason why QGIS deals with this info as 3043 or it is a bug? Is it possible that not changing it to 25831 can cause my data to be imprecise?

  • 1
    The difference between the two is that when using EPSG:3043, interchange data should be give in northing,easting order rather than the usual-for-UTM order of easting,northing, as in EPSG:25831.
    – mkennedy
    Commented Jan 12, 2017 at 19:23

1 Answer 1


IMHO,the projection parameters are the same for both codes:

+proj=utm +zone=31 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs

Important is the contents of the * prj file. If it contains only the parameters and not EPSG code self, QGIS uses the first suitable parameter entry.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.