How to Sync Google Calendar with Microsoft Teams Calendar
Keep Google and Teams calendars perfectly aligned — automatically, in near real-time.
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The problem
Google Calendar and Microsoft Teams Calendar don't natively talk to each other. Google Calendar can subscribe to external iCal feeds but only refreshes every 12–24 hours, and subscribed calendars are read-only — there's no two-way sync. Meanwhile, teams Calendar is an Exchange calendar under the hood. It syncs within the Microsoft ecosystem but has no direct iCal export from the Teams interface. The result: you end up double-booked, or you waste time manually copying events between Google and Teams.
Common issues
- Google Calendar's iCal subscription only refreshes every 12–24 hours, so changes from other calendars appear with significant delay
- Teams doesn't offer a direct iCal export — you must go through Outlook or Exchange admin
- Events added to a subscribed calendar inside Google don't sync back to the source calendar
- Teams meetings created in channels may not appear on personal calendar subscriptions
What people try
The most common workaround is subscribing to an external iCal feed via Google Calendar settings. On the Teams side, people try publishing the underlying Exchange calendar and subscribing to it from the other calendar app. Some users resort to exporting .ics files and importing them manually, or use automation tools like Zapier to bridge the gap.
Why manual approaches fail
Google only polls external feeds roughly once a day, meaning last-minute changes won't show up in time to prevent conflicts. On the other side, the Teams interface doesn't expose this — users need Outlook web access, and admin policies often block external sharing. Manual exports are snapshots — they go stale immediately. Automation tools add complexity, cost, and still can't guarantee real-time sync. None of these approaches reliably prevent double bookings.
How iambusy solves this
iambusy connects Google Calendar and Microsoft Teams Calendar through their iCal feeds and syncs busy time automatically. Open Google Calendar Settings, select the calendar you want to sync, scroll to 'Secret address in iCal format', and copy the URL. Teams Calendar is part of Exchange Online — publish the calendar from Outlook on the web to get an iCal link. Paste both into iambusy and your availability stays aligned across both calendars within seconds — no passwords shared, no admin access needed.
Connect your calendars
Paste the iCal URL from each calendar. Takes 30 seconds per calendar, no passwords required.
Set your sync rules
Choose what to share — full details, titles only, or just Busy blocks to keep things private.
Stay in sync automatically
Changes propagate in seconds. No manual work, no double bookings, no missed meetings.
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Frequently asked questions
Can I sync Google Calendar with Microsoft Teams Calendar for free?
iambusy offers a 7-day free trial with full access. After that it's $5/month or $50/year — less than the cost of a single double-booked meeting.
Does syncing Google and Teams require sharing my password?
No. iambusy uses iCal feed URLs which are read-only. Your calendar credentials are never shared or stored.
How fast do changes sync between Google Calendar and Microsoft Teams Calendar?
Most changes sync within seconds through webhooks and smart polling. This is significantly faster than native iCal subscription refresh rates.
Will my event details be visible when syncing Google and Teams?
You control what's shared. Use Busy-only mode to hide all event details, or choose to sync titles, descriptions, or full event information.
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