If you want to convert the Mac OLM files to Windows PST then, you can use the most
efficient vMail
OLM Converter Tool, which can easily convert your OLM files to PST and many other file formats like MBOX, MSG, EML, EMLX, etc. This OLM Converter Tool also
migrates the OLM files to Gmail, Yahoo, Hotmail, Office 365 and many other
email clients. It comes with a user-friendly GUI that makes it easy to use even
for non-tech user also. It smart and advanced algorithm provides a simple and
easy process of conversion.
Know more info- https://www.vsoftware.org/olm-to-pst-converter.html