For OLM file conversion in PST file, it is better to try a manual method before switching to any third party solution. In the manual method, You need to configure a Gmail IMAP account in both Windows Outlook and Mac Outlook. On the other hand, It is quite technical and time confusing process and If you want any recommendation then i would like to recommend you to use this OLM to PST converter software which can export single or multiple OLM data into PST format in just single way. You can also Export your OLM file data to Office 365 Account and Live Exchange server without any problem. This Software compatible with all the latest version of MS Outlook.
Many software is available in the market for conversion but I will suggest the most useful Convert OLM file to PST Tool. This tool speedily converts all email items such as emails, notes, contacts, calendars, drafts, tasks, email attachments, etc. You can export OLM files data to PST, EML, MSG, EMLX, formats. There are no size limitations of file size for OLM to PST Conversion. All versions of Outlook, both Mac and Windows are well supported by it.
This software gives a free of cost tool OLM to PST Converter application to transfer your OLM file to PST format including all attachments, messages, notes, calendars, and other data items. This is a different device to another tool that can also move OLM files to other file formats like MBOX, PST, EMLX, EML, etc. It is wholly able to remove duplicate emails files while the migration OLM files. Here this tool provides a free demo version and you can get a trial for your satisfaction that can convert 10 files of each folder.