# Google Calendar

Connecting Google Calendar is the single most important integration: it lets 42min see
when you're busy (so you're not double-booked) and add new bookings to your calendar
automatically. You connect it from [**Availability → Calendar**](/360/availability?tab=calendar).
This page is the Google-specific reference; for the step-by-step walkthrough (which
also covers Microsoft / Outlook) see
[Connecting your calendar](/help/getting-started/connecting-your-calendar).

## What it does

- **Conflict checking** — 42min reads the calendars you mark for conflict checks and
  removes those busy times from your booking pages.
- **Write-back** — when someone books, 42min creates the event on the calendar you've
  set as the write target; the invitee gets a calendar invite.
- **Google Meet** — for event types whose location is Google Meet, a conference link is
  generated per booking — see [Google Meet](/help/integrations/google-meet).
- **Multiple accounts** — connect more than one Google account (e.g. work and personal)
  and choose per-calendar what each is used for.

<Screenshot
  src="/help/screenshots/getting-started/connect-calendar.png"
  alt="The Calendar tab of the Availability page in the 42min dashboard, with an 'Add Calendar' button"
  caption="Availability → Calendar. 'Add Calendar' starts the Google sign-in; once connected, each calendar can be set to check conflicts and/or be the write target."
/>

## How to do it

1. Open [**Availability → Calendar**](/360/availability?tab=calendar).
2. Click **Add Calendar**, sign in with the Google account, and grant 42min access.
3. Choose which of that account's calendars **check for conflicts** and which one new
   bookings are **written to**.
4. Repeat for any other Google accounts.

## Common pitfalls

- **Connected but slots are still wrong.** The *account* is connected, but the
  *calendar* holding your events isn't ticked for conflict checks — fix that on the
  Calendar tab.
- **No write-back.** Pick a calendar as the write target; without one, 42min has
  nowhere to create the event.
- **Access revoked.** If you remove 42min from your Google security settings, the
  connection goes stale — reconnect from Availability → Calendar.