I have a csv file wich contains three columns: ID, latitude and longitude. These latitudes and longitudes are taken from a projection in OSGB36.

How can I possibly convert these latitudes and longitudes in this OSGB36 projection to latitudes and longitudes in WG84?


If you are using FME, and want to get a new CSV file as output, then generate a workspace from CSV format to CSV format. Use the AttributeReprojector transformer to reproject the x/y attributes.

  • Hi Mark, the problem I have is that the parameters for the AttributeReprojector are X and Y attributes, whereas the initial source file has latitude and longitude (measured in degrees) so that they are not equivalent to X and Y. – Darius Jan 27 '15 at 7:53
  • Yes, that's fine. Just pick longitude for X and latitude for Y. If the degrees are DMS (rather than decimal degrees) then you can convert them first with the DecimalDegreesCalculator transformer – Mark Ireland Jan 27 '15 at 18:30
  • Mark, Thanks for your reply. It seemed to work using the AttributeReprojecter. The X parameter has to linked to my Longitudes and the Y to the Latitudes. In addition, intead of using the OSGB36 and WGS84 projections as such, it's better to use their SRIDs (EPSG:4277 & EPSG:4326). – Darius Jan 28 '15 at 12:31

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