These steps will allow you to fully integrate your Google Calendar into Outlook so if you updated your Google Calendar, the updates will appear in your Outlook calendar view. Currently, Outlook for browser is the only version of Outlook that fully supports this level of integration. 

There are ways to add your Google Calendar to your Outlook app (whether it’s Windows or Mac), but it will only show the events in your calendar that were added the moment that you added the calendar and will never update. Additionally, integrating your Google Calendar into the browser version of Outlook will not make your Google Calendar appear in other Outlook apps.

1. Open up your Outlook Calendar.

2. On the left side of the screen, you will see a list of calendars that you have available to view. Click on the button above the list that says Add Calendar.
   
   

   A window should pop up with a list of options on the left side. Click Add Personal Calendars.

   

3. Click Google. 
   
   
   
   

4. Select the email of the Google account that has the calendars that you want to add. Follow the prompts to sign in and agree to the permissions. Note that the permissions are allowing you to use your Google account through Outlook so all of the things that you’re granting Microsoft the ability to do are things that you will be controlling.
   
   

   After you add the calendar, you will be given an option to separate your Google calendar from your default Outlook calendar. After connecting, your Google calendar is automatically integrated, which means that users can view your Google calendar at the same permission level that they have for viewing your default calendar. If you would like to turn this off, click the switch next to Include in My Work Availability.
   
   

5. You can view your calendar by clicking the X in the top right corner of the pop-up window and then viewing your list of calendars on the left side of your screen. The calendar will be listed in a folder named after your Gmail handle that will be separate from your Outlook calendars.

   
   
   

6. To remove your account, hover your cursor over your Gmail handle in the list of calendars and click the three dots. Select Manage Account. 
   
   

7. Then click Remove Account in the window that appears.