I looked for a convert option in 15 but couldn't find it.
I can open the ver.12 file but is it now converted?
FileMaker 12, 13, 14 and 15 share the same file format so there is no need to convert. The only issue you could come across is a feature in a newer version (e.g 15) not showing or working correctly in an older version (e.g. 12). Make sure to control which version of FileMaker your audience uses so you can insure they get the best experience. You can even set the required version in File Options if you like.
No. There is nothing to convert.
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