Are you looking for a solution to export Mac Outlook calendars to ICS file format? Use a reliable and advanced Mac PST Converter software. It is one of the best tools to export Mac Outlook calendar to ICS file format without Outlook installation. It is a very simple GUI, anyone can easily handle and manage the software. There is no file size limitation, one can export a large size PST files at a time without any problem. During the migration process, the software keeps all the folder structures without any changes and data loss. It supports all the versions of MS Outlook and Mac OS.