Software such as Outlook Mac Exporter offer users all the tools needed to quickly migrate from Outlook for Mac .olm data files to Microsoft Outlook for Windows .pst email data files. But since a lot of Mac users look for a way to transfer their Outlook data to Windows you can probably find many similar utilities that offer this OLM to PST conversion.
Open OLM file Open PST fileMac version of the popular e-mail client and personal information manager from Microsoft
A dedicated OLM to PST converter
Utility used for Outlook data conversion