Use Calendar ImportExport to import multiple iCal/vCal files (.ics, .vcs) to Outlook calendar (appointments), or export Outlook calendar (appointments) to iCal/vCal files at once.
Split, combine iCal/vCal files even without Outlook installed.

Sync, export or move Outlook calendars in an easy way.
Use it to manage duplicates while importing, or apply date range filter while exporting.
Use command line interface to automate import, export task.

Main Benefits

Easy to use for beginners, powerful for advanced users.
It is not an add-in. It does not slow down your Outlook.
Imports and exports single and multiple entries iCal/vCal files at once.
Can split/combine multiple iCal/vCal files to one iCal/vCal file without Outlook installed.
Can be automated - runs from a command line.
Manages duplicates while importing.
Allows to apply date range filter while exporting.
Works with latest Outlook 2013 and older Outlook 2010, 2007 and 2003 (both 32 and 64 bit versions).

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