Outlook ↔ Google Calendar Sync

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:small_blue_diamond: Sync your Outlook and Google calendars securely, including meeting attendees, reminders, full description and more.

:small_blue_diamond: Ideal for liberating your corporate Exchange calendar, making it available on any of your devices with access to Google Calendar.

:small_blue_diamond: No install necessary, works behind web proxies and actively developed.
Get syncing in minutes.


  • Supports all versions of Outlook from 2003 to 2019/Microsoft365 64-bit!
  • Installable and portable options - even runs from a USB thumbdrive
  • Synchronises items in any calendar folder, including those shared with you, from
    • Outlook :arrow_right: Google
    • Outlook :arrow_left: Google
    • Outlook :left_right_arrow: Google (two-way/bidirectional sync)
  • Includes the following event attributes:
    • Subject
    • Description
    • Location
    • Attendees (including whether required or optional)
    • Reminder events
    • Availability (free/busy)
    • Privacy (public/private)
    • Categories/colours
  • Differential comparison updates only attributes that have changed
  • Customisable date range to synchronise, past and future
  • Frequency of automatic syncs, including push-sync from Outlook
  • Configurable proxy settings, or use Internet Explorer’s
  • Merge new events into existing on destination calendar
  • Prompt on deletion of items
  • Ability to obfuscate custom words for privacy/security
  • Option to force items in target calendar
    • as private
    • as available
  • Syncs recurring items properly as a series
  • Can run unobtrusively in the system tray, with bubble notifications on sync
  • Application can start on login, with delay if required

Minimal Requirements

  • Any version of Windows with .Net Framework 4.5 installed*
  • Outlook 2003 to 2019/Microsoft 365, 32 or 64-bit

* Installed by OGCS Setup.exe if necessary.

Not Required :wink:

  • Install or local administrator privileges
  • Direct internet connection (proxy aware)

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