Calendar use limits

When Calendar administrators or users reach certain limits, they might get an error message and be unable to update Calendar. Google creates certain guidelines to protect users and your domain from abusive behavior.

If you go past the limits, your Google Calendar goes into read-only mode that normally lasts a few hours. Generally, most users don't hit these limits because they're above the activity level of a typical Calendar user. While you wait, you can still view events in Calendar. 

Error messages you might see

If you go past one of the use limits, you might get messages such as: 

  • Unable to save event  You've 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.

How to fix the problem    

Prevent Calendar issues by knowing the use limits and following 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.

It may take several months until this limit type is fully replenished.

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.
 

It may take several hours until this limit type is fully replenished.

60 calendars *

Send too many invitations to external guests

To prevent spamming, Google 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 G Suite users in your primary or secondary domain, will not consume this limit type. Users in your domain that are on non-G Suite systems are considered external.

 

It may take several days until this limit type is fully replenished.

10,000 invites *

Email too many guests via Google Calendar events

 

To prevent spamming, Google Calendar limits the number of emails a user can send to external guests with the ‘Email Guests’ feature.

 

Using the ‘email guests’ feature with G Suite users in your primary or secondary domain, does not consume this limit type.

 

This limit replenishes gradually within 24 hours.

~2,000 emails *

Share calendars with too many users

 

If you share calendars with many users in a short period, Google Calendar might switch into read-only mode for that user.

 

It may take several hours until this limit type is fully replenished.

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 may differ.

Limits changes

Google Calendar limits can change without notice. The use limits for G Suite free edition, G Suite trial, or G Suite for Education are lower than G Suite paying editions. At the end of your free trail, the limits increase when you purchase the Enterprise edition of Google Calendar. 

 

Was this article helpful?
How can we improve it?