I am receiving an error (Invalid distance units) when attempting to import a MapInfo MIF File (.mif) into MapInfo.

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Has anyone come across this error before?

Can't seem to find much about in the MapInfo documentation or online.

Opening a similar file in Notepad, where I get the same error, shows the following:

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  • What are your distance units, and what is the projection?
    – nmtoken
    Jan 7, 2018 at 12:47
  • Hi, the projection is OSGB36 and I think the distance units are kilometres.
    – sm29
    Jan 7, 2018 at 14:24
  • 1
    Please Edit the question in response to requests for clarification. It's not fair to those who would answer to need to mine the comments for critical information.
    – Vince
    Jan 7, 2018 at 15:40

1 Answer 1


In the MIF file where you have the line specifying the coordinate system, the distance unit has two pairs of quotation marks around it, e.g.""m"" . Remove one of the pairs of quotations so that you only have one left, e.g. "m", and save the file. It should now import ok.

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