Yes, you can convert OST to PST on Mac systems, but not using Microsoft Outlook for Mac alone. Outlook does not provide a direct option to open or export standalone OST files, especially if they are orphaned or disconnected from Exchange.
To convert OST to PST on a Mac, you need a compatible third-party converter that supports macOS. Tools like SysInfo OST to PST Converter (Mac version) are designed to scan OST files directly on Mac without requiring Outlook installation. You simply add the OST file, preview mailbox items such as emails, contacts, calendars, and attachments, choose PST as the output format, and start the conversion.
To convert OST to PST on a Mac, you need a compatible third-party converter that supports macOS. Tools like SysInfo OST to PST Converter (Mac version) are designed to scan OST files directly on Mac without requiring Outlook installation. You simply add the OST file, preview mailbox items such as emails, contacts, calendars, and attachments, choose PST as the output format, and start the conversion.