Outlook Calendar Export vs Sync
Microsoft's official export/import workflow copies your Outlook calendar into Google Calendar exactly once. Continuous sync keeps following changes. This guide walks through the export, what actually survives it, and how to decide which approach fits.
Short answer
Export/import moves a frozen copy of your Outlook calendar into Google Calendar — free, official, and right for one-time migrations. It never updates afterwards: reschedules, new invites, and cancellations don’t arrive. If Outlook keeps receiving meetings, you want a subscription (12–24h delay) or continuous sync (about a minute) instead.
How do I export an Outlook calendar and import it into Google?
- In Outlook on the web, open Settings → Calendar → Shared calendars, publish the calendar with “Can view all details”, and use the ICS link to download the file (classic desktop Outlook can instead use File → Save Calendar). Microsoft’s export guide covers each Outlook version.
- In Google Calendar, open Settings → Import & export, select the downloaded .ics file, choose which Google calendar receives the events, and click Import.
What survives the import — and what doesn’t?
- Times, titles, locations, and descriptions transfer faithfully, including Teams join links in the event body.
- Recurring series import with their recurrence rules as of the moment of export — later changes to the series never follow.
- Remindersfollow Google’s notification defaults, not the reminders you had configured in Outlook.
- Attendees are listed on the copies, but the events are disconnected from the original invitations — RSVP changes and organizer updates no longer reach them.
- Everything after the export is missing by definition: new invites, reschedules, cancellations, and deletions all require another export/import round.
Export/import vs continuous sync, side by side
| One-time export/import | Continuous one-way sync | |
|---|---|---|
| Best for | A one-time move when the Outlook calendar doesn't need to stay current | Daily planning when new invites and changes must appear in Google Calendar |
| Update behavior | Static snapshot; future edits need another export and re-import | Changes keep flowing — updated times, cancellations, and deletes included |
| Source calendar | Copied once, then the two calendars drift apart | Outlook stays the source of truth; Google holds auto-updating copies |
| Effort over time | Manual and easy to forget after the first import | Connect once; nothing to remember afterwards |
| Price | Free | $9/month after a 14-day free trial (no credit card required) |
When is the export the right choice?
A snapshot is exactly right when the calendar’s life in Outlook is ending: you are leaving a job and want your history, consolidating old accounts, or archiving a past project’s schedule. The export is free, official, and safe — it never modifies the Outlook side.
When do you need sync instead?
The moment the Outlook calendar keeps receiving meetings, a snapshot starts lying to you — this morning’s reschedule still shows the old time in Google. The free fix is Google’s URL subscription, which stays connected but refreshes only every 12–24 hours. Continuous sync closes that gap to about a minute: here is how it works, and here is every method compared if you want the full decision.
Frequently asked questions
If I import an Outlook .ics file into Google Calendar, will it update itself?
No. Microsoft's documentation describes the imported calendar as a static snapshot — future edits, new invites, cancellations, and deletions never arrive. To receive updates you need a subscription (12–24 hour refresh) or continuous sync.
How long do updates take with a subscribed Outlook calendar?
Google Calendar refreshes URL subscriptions roughly every 12–24 hours, and Microsoft warns subscription updates can sometimes take more than 24 hours — so a change can wait a full day or longer before appearing.
When is a one-time export the right choice?
When you are permanently migrating away from Outlook, or need a fixed copy of past events. For any calendar that keeps receiving meetings, an export is stale the moment something changes.
Does exporting my Outlook calendar change or delete anything in Outlook?
No. Both the export and any later import into Google Calendar are read-only with respect to Outlook — you are copying events out, and the source calendar stays exactly as it was.