How to Enable "Offline Calendar" on Google Calendar

To enable Offline Calendar for Google Calendar, follow the steps below (steps below are via Google Calendar on your Chrome browser):

From your calendar, choose the Settings cog and then Settings.
Click the Offline menu section.
The page will automatically scroll to the Offline section
Check the Turn on offline calendar box.
A black popup box will appear at the bottom of the screen prompting you to reload the page.
After refreshing the page, you will now be able to use Calendar offline.
- Your calendar will start to sync for offline use. At the top right of your calendar you’ll find Sync.
- When the sync is complete, your calendar’s status shows Ready for offline.
- When you’re offline, your calendar’s status shows as Offline.
- A notice appears: “It looks like you’re offline. Some actions might not work.”

Important:

“My calendars” and your calendar’s data will sync from the last time your computer was online.
When you're offline, you can’t:
- Create or edit events
- Email guests
- Access tasks
If you clear your computer’s cached images and files, it will also clear offline support for Google Calendar. Turn on Google Calendar offline again to use Calendar offline.