Google Calendar API

API

Integrate Google Calendar event management into your applications

Overview

The Google Calendar API is a RESTful interface that enables developers to programmatically display, create, update, and delete calendar events, manage calendars, and handle reminders/attendees. Responses are in JSON format. Key endpoints include listing events (/events/list), creating events (/events/insert), updating events (/events/update), and managing calendars (/calendars/get). Use cases include building appointment scheduling tools, syncing team calendars, automating meeting setup, and integrating calendar data into project management apps. OAuth 2.0 authentication is required for user data access.

Example Integration (JavaScript)

script.js JS


fetch('https://developers.google.com/google-apps/calendar/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

OAuth 2.0 Authentication
RESTful Interface
JSON Response Format
Event CRUD Operations
Calendar & Reminder Management
Push Notifications for Real-time Updates
Recurring Event Support

Frequently Asked Questions

? Is Google Calendar API free to use?

Yes, it offers a free tier with generous quota limits (e.g., 10,000 requests per 100 seconds per user). Beyond the free quota, paid plans apply based on usage volume.

? Does it require an API Key?

No, it uses OAuth 2.0 authentication to access user-specific calendar data. You need to create OAuth client credentials in the Google Cloud Console to authenticate requests.

? What is the response format?

All API responses are in JSON format, which is widely supported and easy to parse in most programming languages.

Top Alternatives

Microsoft Graph Calendar API Search Google

Apple Calendar CalDAV API Search Google

Calendly API Search Google

Tool Info

Pricing Freemium

Category Calendar

Platform Public API

Pros

⊕ Seamless Google Workspace Integration
⊕ Extensive Official Documentation
⊕ Advanced Time Zone & Recurrence Features
⊕ Scalable Paid Tiers for High Usage

Cons

⊖ OAuth 2.0 Setup Complexity for New Developers
⊖ Rate Limits on Free Tier
⊖ No SLA for Free Usage
⊖ Backend-Focused (Limited UI Customization)