If you trying to convert OLM file to PST format for Windows Outlook using free methods, then you must take the help of best OLM to PST converter (DataRepairTools). It supports exporting OLM file emails, calendars, contacts, and other items to PST file format. The software enables you to preview all OLM file data elements and apply filters according to your needs. It does not require the MS Outlook installation on the system to start conversion.