To convert OLM to PST file format, you can use Vmail OLM to PST Converter that allows you to easily migrate or move OLM files from Mac to PST mailbox with all data files accurately. It is not necessary to install any email client to transfer Mac OLM to PST. You can try it with the free trial version for software illustration and see the features. This Software supports all versions of windows.

Know more info- https://www.vsoftware.org/olm-to-pst-converter.html