Google Calendar and Outlook can sync, but not automatically

Google Calendar and Outlook do not sync directly to each other. If you add an event to Google Calendar, it will not appear in Outlook unless you take specific steps to connect them. The same is true in reverse — events you create in Outlook stay in Outlook until you set up a bridge between the two.

However, you have three practical ways to make them work together. You can subscribe to a Google Calendar from within Outlook, you can export events from one to the other, or you can use a third-party tool that watches both calendars and keeps them in step. Which path makes sense depends on whether you need one-way or two-way sync, how often your events change, and which calendar is your main one.

Key Takeaways

  • Google Calendar and Outlook do not automatically sync with each other, so events in one will not appear in the other without action on your part.
  • You can subscribe to a Google Calendar in Outlook so that Google events appear read-only in your Outlook calendar view, but changes in Google Calendar take time to show up.
  • Exporting events works if you are switching calendars or moving a batch of events, but it is a one-time action and does not keep calendars in sync going forward.
  • Third-party automation tools like Zapier or Make can watch both calendars and copy new events between them, but they cost money and add a middle layer to manage.

Subscribing to Google Calendar from Outlook (one-way sync)

The simplest connection is to subscribe to your Google Calendar inside Outlook. This makes Google events visible in your Outlook calendar, though they appear as read-only and updates can lag by several hours.

To set this up, open Google Calendar in a web browser and find the calendar you want to share. Click the three-dot menu next to that calendar's name and select Settings and sharing. Scroll down to Integrate calendar and copy the public calendar address (the long URL that starts with https://calendar.google.com/calendar/u/0/r).

In Outlook on the web, go to Settings (the gear icon), then Calendar, then Shared calendars. Paste the Google Calendar address into the field and click Add calendar. The Google Calendar will now appear in your Outlook calendar list. Events from Google Calendar show up in your Outlook view, but you cannot edit them from Outlook — you have to go back to Google Calendar to make changes.

This method works well if Google Calendar is your main calendar and Outlook is where you want to see everything in one place. It does not work if you need changes in Outlook to flow back to Google Calendar.

Exporting events from one calendar to the other

If you are moving a specific set of events or switching from one calendar to another, you can export from the source and import to the destination. This is a one-time action, not an ongoing sync.

To export from Google Calendar, open the calendar, click the three-dot menu next to the calendar name, and select Settings. Scroll to the bottom and click Export calendar. Google will read a file with the .ics extension containing all events from that calendar.

To import into Outlook on the web, click Settings (the gear icon), then Calendar, then Import calendar. Select the .ics file you just downloaded and choose which Outlook calendar to import it into. Outlook will add all those events to your calendar.

The reverse works too: export from Outlook by right-clicking a calendar and selecting Export calendar, then import the .ics file into Google Calendar through Settings > Import & export > Import. After the import is done, the two calendars are separate again — changes in one do not affect the other.

Using third-party automation to keep calendars in sync

If you need events to flow both ways automatically, a third-party automation tool is the only real option. Services like Zapier, Make (formerly Integromat), and IFTTT can watch your Google Calendar and Outlook calendar and copy new events between them.

These tools work by checking your calendars on a schedule (usually every 5 to 15 minutes, depending on your plan) and creating a matching event in the other calendar when they spot something new. You set rules for what gets copied — for example, you might copy all Google Calendar events to Outlook but only copy Outlook events that have a certain label or color.

The trade-off is cost and complexity. Most automation services charge a monthly fee (typically $10 to $30 depending on how many actions you need), and you have to set up the connection through their interface. If something breaks or a rule stops working, you have to troubleshoot through the automation tool rather than directly with Google or Microsoft. For most people, this is overkill unless you genuinely need both calendars to stay in perfect sync at all times.

Why Google Calendar and Outlook do not sync natively

Google and Microsoft are competitors, and neither has strong incentive to make their products work seamlessly with the other. Google Calendar is part of Google Workspace, and Outlook is part of Microsoft 365. Each company wants you to stay within their ecosystem.

That said, both companies do support the open iCalendar standard (.ics files), which is why you can export, import, and subscribe across them. The subscription method (where you can view Google Calendar in Outlook) exists because Microsoft chose to support that standard. But true two-way sync — where changes in one calendar when ready update the other — requires either a direct partnership or a third-party tool in the middle.

Which method to choose

If you use Google Calendar as your main calendar and only need to see those events in Outlook, subscribe to Google Calendar from Outlook. It takes five minutes and costs nothing.

If you are moving all events from one calendar to another and will not need both going forward, export and import once. This is the cleanest approach for a one-time migration.

If you use both calendars equally and need changes in either one to show up in the other, you will need a third-party tool. Before you commit to one, test it with a small calendar or a trial period to make sure the sync speed and rule options match what you actually need.

If you are still deciding between Google Calendar and Outlook for your main calendar, consider which one your team or organization uses. Staying in one ecosystem is simpler than trying to keep two in sync.

Frequently Asked Questions

Can I edit Google Calendar events from Outlook?

No. When you subscribe to Google Calendar in Outlook, those events appear read-only. You have to open Google Calendar separately to make changes. If you need to edit events from Outlook, you would need a two-way sync tool like Zapier.

How long does it take for Google Calendar changes to show up in Outlook?

When you subscribe to a Google Calendar in Outlook, updates can take several hours to appear. If you need real-time sync, a third-party automation tool will check more frequently, usually every 5 to 15 minutes depending on the service and your plan.

Will exporting and importing delete my original events?

No. Exporting creates a copy of your events in a file; it does not remove them from the original calendar. Importing adds those events to the destination calendar. You end up with events in both places until you manually delete them from one.

Is there a way to sync Outlook to Google Calendar automatically without paying for a third-party tool?

Not reliably. You can subscribe to Google Calendar in Outlook (one-way), or you can export and import manually. For true two-way automatic sync, you need a service like Zapier or Make, which charge monthly fees.

What happens if I delete an event from one calendar after syncing?

If you used a third-party tool to sync, the deletion behavior depends on how the tool is configured. Some tools will delete the matching event in the other calendar; others will not. Check your automation tool's settings before deleting events to understand what will happen.