Can ChatGPT see my Google Calendar?

Yes, after you connect your Google account. ChatGPT can summarize a day or week, list your calendars and compare availability when a request needs it. It only reaches the account you connected and the calendars that account can already open; installing the plugin doesn't add any Google permissions.

Can ChatGPT add events to my Google Calendar?

Yes. The plugin can create, update and delete events, for example "move my 1:1 with Sam to Thursday afternoon". ChatGPT asks before important actions unless you've changed that setting, and in company workspaces admins choose which calendar actions are enabled. Install steps are in How to install plugins in ChatGPT.

Does it work with Outlook calendars?

No. This plugin connects Google Calendar only. For Outlook and Microsoft 365 calendars, OpenAI offers a separate Outlook Calendar plugin, which you connect with your Microsoft account. At work, a Microsoft Entra administrator may need to approve its permissions before you can connect. Each plugin only sees the calendars of the account you connected to it.

What's the difference between the Google Calendar plugin, app and MCP server?

The Google Calendar app is OpenAI's connection to your calendar. The plugin wraps that connection so you can install it in ChatGPT and Codex from the Plugin Directory. The Google Calendar MCP server is Google's own server, in developer preview, which developers configure through a Google Cloud project for other agents.

plugin

Google Calendar

Manage Google Calendar events

.md How to install

The Google Calendar plugin gives ChatGPT the shape of your day. In practice that means a morning brief of today's meetings and which ones need preparation, finding a free half hour without opening three tabs, moving or creating events from a chat, and looking back at where the last month of meetings went. It works best next to other plugins: with Gmail or Google Drive connected too, ChatGPT can pull the related thread or doc into a meeting brief.

It suits anyone whose day is run by meetings, and people who schedule for others.

From the publisher

Connect Google Calendar for scheduling, availability, daily briefs, and event management. App-backed plugin built by OpenAI for scheduling, availability, daily briefs and event management. Listed in OpenAI's curated Codex marketplace (openai-curated); the manifest declares an app connector.

What you need

A Google account with Google Calendar, personal or Google Workspace. You connect it when you install the plugin. OpenAI's release notes from August 2026 say you can connect more than one Google account on supported plans.
ChatGPT: install from the Plugins tab on the web or desktop app, then use it in Chat or Work on web, desktop or mobile.
Codex: the ChatGPT desktop app or Codex CLI (codex plugin add google-calendar@openai-curated), signed in with your ChatGPT account. It isn't in the plugin set offered to Codex users who sign in with an API key.
Business, Enterprise and Edu: plugins are on by default in Business workspaces and off in Enterprise and Edu. A Google Workspace admin can also block third-party apps or their scopes in the Google Admin console.

Good to know

It can create, update and delete events. By default ChatGPT reads on its own but asks before important actions, such as deleting content or sending something on your behalf. Check the time, time zone and guest list before you confirm. Workspace admins can restrict the app to read-only actions.
Other people's calendars. It works through your Google account, so it only sees the calendars and availability that account can already see.
Scheduled briefs. OpenAI's list of event triggers for scheduled tasks covers Gmail, Slack and GitHub, not Calendar, but a time-based scheduled task can use the plugin, for example to send you a brief every weekday morning.
Disconnecting. Open Settings > Plugins (or Apps), select Google Calendar and choose Disconnect. You can also remove ChatGPT from your Google Account's linked apps page.

Also available as

MCP Toolbox for DatabasesGoogle's open-source MCP server for 20+ databasesMCP server · by Google · 17k stars

Install

1Add it in ChatGPT
Open Plugins in the ChatGPT sidebar (web or desktop), search for “Google Calendar” and select +. You'll be asked to sign in to any connected service on first use. Then type @ in a chat to call it.
2Or install it in Codex
```
codex plugin add google-calendar@openai-curated
```
Start a new Codex session afterwards. You can also run /plugins inside the CLI to browse and install interactively.

Things to ask

“Summarize my calendar, compare availability, prep meetings, or draft event details”
“What's on my calendar tomorrow?”
“Find a free 30-minute slot with Sam next week”

Disconnect or uninstall

1In ChatGPT
Disconnect an account in Settings → Apps or Plugins. To remove the plugin itself, open Google Calendar in the Plugin Directory and select Uninstall plugin. Uninstalling can disconnect every account connected through it, and plugins your workspace installs may not offer the option.

2In Codex

codex plugin remove google-calendar@openai-curated

Google Calendar: common questions

Can ChatGPT see my Google Calendar?: Yes, after you connect your Google account. ChatGPT can summarize a day or week, list your calendars and compare availability when a request needs it. It only reaches the account you connected and the calendars that account can already open; installing the plugin doesn't add any Google permissions.
Can ChatGPT add events to my Google Calendar?: Yes. The plugin can create, update and delete events, for example "move my 1:1 with Sam to Thursday afternoon". ChatGPT asks before important actions unless you've changed that setting, and in company workspaces admins choose which calendar actions are enabled. Install steps are in How to install plugins in ChatGPT.
Does it work with Outlook calendars?: No. This plugin connects Google Calendar only. For Outlook and Microsoft 365 calendars, OpenAI offers a separate Outlook Calendar plugin, which you connect with your Microsoft account. At work, a Microsoft Entra administrator may need to approve its permissions before you can connect. Each plugin only sees the calendars of the account you connected to it.
What's the difference between the Google Calendar plugin, app and MCP server?: The Google Calendar app is OpenAI's connection to your calendar. The plugin wraps that connection so you can install it in ChatGPT and Codex from the Plugin Directory. The Google Calendar MCP server is Google's own server, in developer preview, which developers configure through a Google Cloud project for other agents.