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How To Sync Outlook Calendar With Google Calendar

Learn how to sync your Google Calendar with Outlook quickly and easily with step-by-step instructions and helpful images.

5 min read
Updated January 27, 2025

If you have more than one calendar - say, an Outlook calendar for work and Google for everything else - you've probably noticed that events can easily overlap.

Does this sound familiar? You block a time for your child's dentist appointment on your Google calendar, but for your colleagues Outlook still looks free... and before you know it, a work meeting gets booked right on top of it.

This has happened to me plenty of times. It surprised me that there's not a way to sync Google Calendar and Outlook without using a third-party solution.

1. How To Sync Google Calendar With Outlook Calendar Automatically

Having multiple calendars across different platforms, I found the fastest and most reliable way to keep them aligned is by automating calendar syncing.

Currently, Outlook does not support real-time automatic synchronization with Google Calendar.

However, there are several external tools that make this possible.

Ways to automate calendar syncing

Use a calendar syncing software

Using a dedicated calendar sync tool is the simplest way to keep Google Calendar and Outlook in sync. Caltsu was built specifically for this purpose without unnecessary features, so the setup is quick and straightforward.

N8N automation

You can create an automation flow between calendars using a tool like N8N. Here is a link for a template made in N8N just for this.

Zapier Integrations

Zapier is also a tool that allows you to sync different work applications, not just calendars. Here's a tutorial from Zapier on how to sync your Google calendar with Outlook using their platform.

The last two platforms require some learning, as they offer a wide range of automations beyond just calendar syncing.

I'll show you how you can sync your calendars for free using Caltsu, a software crafted only for syncing calendars, without having to learn automation.

Step-by-step Caltsu instructions

  1. Sign up for a free Caltsu account
  2. Connect your Google Calendar
  3. Connect your Outlook Calendar
  4. Create a sync rule between the two calendars
  5. Your calendars are now synced automatically

Using a third-party calendar sync tool was a game-changer for my time management.

It's such a relief not having to manually update every event across multiple calendars to ensure you don't appear available when you're actually busy.

2. How To Sync Google Calendar With Outlook Calendar (One-Way)

If you only need your calendars to be synced from Google to Outlook and not both ways, you can do it manually without using external software.

Here are the steps to do that:

Step 1: Open Google Calendar settings

Open Google Calendar and go to settings.

Step 2: Select the calendar you want to sync

Select the calendar you want to sync (typically the calendar is called your account name).

Step 3: Get the secret iCal address

Click the "Integrate calendar" section, and copy the secret address in iCal format.

Important: Do not share this link with anyone you don't want to have access to your calendar.

Step 4: Open Outlook and add a calendar

Head to Outlook, and click "Add calendar".

Step 5: Subscribe from web

Select "Subscribe from web".

Paste the link you copied to the text field.

Step 7: Configure and import

Give your calendar a name (I just named it "Google"), select the color and icon you want, and hit "Import".

Step 8: Done!

Your Google calendar should now be visible on Outlook.

Note: This does not mean that events created on Outlook will show up in Google Calendar as well - this method works only one way.

When To Use Automatic Calendar Sync - and When Not

Automatic calendar syncing tools like Caltsu eliminate the need to manually update events across multiple calendars and help prevent double bookings.

But it's not always necessary - or the best choice for everyone.

Here's how to know when you should consider using an external tool, and when not:

Use Automatic Sync If:

  • You manage multiple calendars (work, personal, client accounts) across different platforms (for example, your work calendar is in Outlook and personal calendar is in Apple Calendar)
  • Your schedule changes frequently and you want your calendars updated on all platforms in real time without manually creating events on each platform
  • You want to protect your privacy by sharing only availability or "busy" times, rather than full event details, with those who have access to your calendar

Skip Automatic Sync If:

  • You use a single primary calendar, or all of your calendars are on the same platform such as Google Calendar
  • Your calendar updates are infrequent, and a manual sync once in a while is sufficient

For busy professionals managing multiple accounts, automatic syncing can be a game-changer - but if your schedule is simpler, a one-way manual setup may be all you need.

Get Started with Caltsu

Ready to sync your Google Calendar with Outlook automatically? Start your free trial and never worry about double bookings again.

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