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.ICALENDAR File Extension

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File TypeiCalendar File

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Rare Uncommon Average Common Very Common
CategoryMisc Files


This file is saved in a plain text format. You can open and view the contents of this file using a text editor.


Universal calendar format used by calendar programs such as Google Calendar, Apple Calendar, and Microsoft Outlook; saved in a plain text format and contains an event or task; used for sending events or tasks to others, who can import it into their calendars.

More Information

The ".icalendar" extension is not as commonly used as the .ICS extension.

NOTE: Apple Calendar was formerly known as Apple iCal but was changed in 2012 with the release of OS X Mountain Lion.

Program(s) that open .ICALENDAR files
Microsoft Windows LogoWindows
Microsoft Outlook 2016
Mac OS X LogoMac
Apple Calendar
Web LogoWeb
Google Calendar
Updated 11/11/2014