Simple and fast way to convert OLM to PST file convert is you have try any third party OLM to PST converter tool, which convert all over OLM file from Mac OS and convert into windows outlook PST file format with out loss any data or attachments.

Features :-

>>> Convert unlimited olm files to pst
>>> Save recovered OLM files in PST, MSG, MBOX, EML, PDF and HTML.
>>> Support Unicode characters
>>> Preview of converted files before saving
>>> Supports MS Outlook 97, 98, 2000, 2002, 2003, 2007, 2010, and 2013 versions
>>> Support Windows all versions

You can try free demo :- Convert OLM File to PST Tool - Migrate OLM Emails to Outlook PST File