Avoid Calendar use limits

To protect users and domains from abusive behavior, Google sets limits for Google Calendar use. 

These limits are higher than the typical activity of Calendar users, so most users won't exceed them. However, if you exceed the limits, your Calendar might become read-only for a few hours. When it’s read-only, you can still view events but you can't create or edit them.

Note: Calendar keeps events indefinitely as long as the user does not delete them.

Errors related to use limits

If you exceed Calendar use limits, you might get messages such as: 

  • Unable to save event—You reached the limit for the number of events you can edit.

  • Calendar usage limits exceeded—Results from an API call.

  • There was a problem saving your changes. Please try again in a few minutes—Message is followed by more information describing what limit was reached.

Avoid exceeding limits     

To avoid exceeding Calendar limits, follow these guidelines. 

Don't... Limit 

Create too many events

  • If you create more than 100,000 events in calendar during a short period, you might lose calendar edit ability for a few hours.
  • Time to replenish this limit—Possibly several months.
100,000 events*

Create too many calendars

  • If you create more than 60 new calendars in a short period, your calendar might go into read-only mode for several hours.
  • Time to replenish this limit—Possibly several hours.
60 calendars*

Send too many invitations to external guests

  • To prevent spamming, Calendar limits the number of invitations a user sends to external guests. If a user sends 10,000 invites in a short period, the user’s calendar might go into read-only mode.
  • Inviting Google Workspace users in your primary or secondary domain will not consume this limit type. Users in your domain that are not on Google Workspace systems are considered external.
  • Time to replenish this limit—Possibly several days.
10,000 invites*

Email too many guests via Google Calendar events

  • To prevent spamming, Calendar limits the number of emails a user can send to external guests with the Email guests feature.
  • Using the Email guests feature with Google Workspace users in your primary or secondary domain does not consume this limit type.
  • Time to replenish this limit—Within 24 hours.
~2,000 emails*

Share calendars with too many users

  • If you share calendars with many users in a short period, you might lose the ability to share calendars for a few hours.
  • Time to replenish this limit—Possibly several hours.
750 shares*

*This number is true only if a user’s limits are fully replenished. If a user does any actions in this table regularly, then the actual use limit might differ.

Limits for free & trial accounts

Limits for the legacy free edition of G Suite and Google Workspace trial accounts limits are lower than those stated above.

Additional usage for subscription accounts

Some Calendar use limits are automatically increased when:

  • Your domain has cumulatively paid at least USD $100 (or equivalent), and
  • At least 60 days have passed since achieving that payment threshold. 

If you purchased your domain from Google, the amount required to increase your limits is USD $100 plus the cost of your domain. It may take several days after meeting both criteria for the limits to be raised. 

To end your trial and convert to a paid account, go to Set up Google Workspace billing. To make a manual payment, see Make a manual payment or pay early.

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