Millions of people use Google Calendar to track their events. The Calendar API lets you integrate your app with Google Calendar, creating new ways for you to engage your users.

Calendar API

Integrate with mobile and web apps

You can use the Google Calendar API to find and view public calendar events. If you're authorized, you can also access and modify private calendars and events on those calendars.

Use the Google Calendar API to achieve deeper integration with Google Calendar. Mobile apps, Web apps, and other systems can create, display, or sync with Calendar data.

Other ways to integrate with Calendar

The calendar provider is a repository on Android for a user's calendar events. You can use the calendar provider to integrate with Calendar.
CalDAV is an extension of WebDAV that provides a standard for clients to access calendar information on a remote server. Google provides a CalDAV interface that you can use to view and manage calendars using the CalDAV protocol.
Send events to your users' calendars using Gmail! You can embed structured data markup in your emails to push events to users' calendars.

Have you ever booked a dining reservation, plane ticket, hotel room, concert ticket, or seats to the game from your favorite app, only to have to exit that booking app to enter the details into your calendar? Why can’t today’s apps do that for you automatically? It doesn't have to be like that. Learn how to create events using the Google Calendar API, giving your users a better experience. (7:14)

Creating events is great, but even more powerful is the ability to modify existing events. If you have a booking app, now you can automatically update a user's calendar so they don't have to do it manually, or worse, have 2 Calendar entries where one's wrong. In this video, learn how to modify events with the Calendar API, and as a bonus, also learn how to make events repeat (recurring). (6:33)

What's New with Calendar API v3

  • Starting today, all existing and new out of office events will be updated to set the organizer to unknownorganizer@calendar.google.com instead of the calendar owner. It may take 2-3 weeks for this change to fully roll out.
    You can use the calendarId from the API endpoint https://www.googleapis.com/calendar/v3/calendars/calendarId to identify the owner of the out of office event.

  • The Calendar API now exposes a new field for events. The new field is called eventType and allows users of the API to distinguish special event types, such as outOfOffice. For more information, see the API reference.

  • From now we require conferenceData to be consistent with conferenceData.conferenceSolution.key.type; meaning only Google Meet calls can have conferenceData.conferenceSolution.key.type set to hangoutsMeet. All 3P video conference providers are expected to set conferenceData.conferenceSolution.key.type to addOn.