Sync your booking calendar with Google Calendar, and choose calendars wisely
Which calendars to check for conflicts, which one to write bookings to, how to handle several diaries, and what access you're really granting when you connect.
To sync your booking calendar with Google Calendar, you connect your Google account to your booking tool and make two decisions: which calendars it should read to find your busy times, and which calendar it should add new bookings to. Get those right and clients only ever see slots when you're genuinely free.
This guide focuses on that connection itself: choosing calendars, juggling work, personal and shared diaries, and understanding the privacy side of granting access. For what happens after you're connected, such as reschedules, cancellations and troubleshooting, see our companion guide on syncing bookings with Google Calendar automatically.
What does syncing a booking calendar with Google Calendar mean?
A booking tool doesn't replace your Google Calendar. It sits on top of it. Your booking page works out which slots to offer by combining your availability rules (the hours you're willing to take bookings) with the busy times it reads from your calendars. When a client books, the tool adds an event to a calendar you choose.
Two jobs: checking and writing
It helps to think of each calendar as having up to two roles:
- Checked for conflicts. The tool reads busy times from this calendar and won't offer slots that overlap. You might check your work calendar, a personal calendar and a shared team calendar all at once.
- Written to. This is the one calendar where new bookings are added. Usually that's your main work calendar, or a dedicated 'Client bookings' calendar you create in Google Calendar.
A calendar can be checked without being written to, which is exactly what you want for a personal or family diary.
How Google Calendar organises calendars
One Google account can hold several calendars: your primary calendar, extra calendars you create, and calendars other people have shared with you. Each has its own sharing settings. Booking tools usually list the calendars your account can see and let you tick which to check.
What Calenix does
Calenix's Google Calendar integration covers calendar sync, conflict detection so busy times are blocked, and creating and updating events for bookings, including reschedules and cancellations. The Free plan includes one connected calendar; Individual supports up to six, which matters if you need to check several accounts or diaries. You can also sign in to Calenix with Google if you prefer not to manage another password.
If you're new to the idea of a dedicated booking layer, our explainer on what appointment scheduling software is covers the basics, and the Google Calendar scheduling guide explains what Google can do on its own.
If your work meetings live in Outlook, see how to schedule across Google Calendar and Outlook with one booking page.
Why your calendar choices matter
The most common booking disaster is the double booking: a client books a slot you'd already promised to someone else, or to the school run. Nearly every case comes down to a calendar that wasn't being checked. If your dentist appointment sits in a personal calendar the booking tool can't see, that hour looks free.
The opposite problem is just as costly. Check too many calendars and you'll hide slots you're actually happy to take. A shared office calendar full of 'FYI' events, a colleague's holiday or a subscribed public holiday calendar can quietly wipe out whole days of availability. Fewer bookings, and you won't know why.
Where bookings are written matters for your working day. If they land in a calendar you rarely look at, or one your assistant can't see, you'll miss prep or turn up late. A dedicated bookings calendar lets you colour it distinctly, share it with a colleague and still keep your personal diary private.
Then there's privacy. Connecting a calendar gives the booking tool permission to read and change events. Understanding that access, and limiting it to the calendars you need, is part of handling data responsibly under UK GDPR or the Australian Privacy Principles, particularly if your events hold client names or notes. Clients only see available times on your page, but you're still the one responsible for what you connect.
Good choices here also make the rest of your scheduling smoother. Once the calendar is trustworthy, you can share your link widely and let online appointment scheduling do its job.
Benefits of syncing your booking calendar with Google Calendar
Accurate availability: clients only see slots that are free across every calendar you choose to check.
One diary to live in: bookings appear in Google Calendar alongside everything else, on your laptop and mobile.
Personal life stays private: a personal calendar can block time without its event details appearing on your booking page.
Cleaner separation: a dedicated bookings calendar makes client appointments easy to spot, share and filter.
Less admin: no copying bookings across by hand, and no second calendar to keep in step.
Room to grow: connect more calendars on a paid plan as you add work accounts or side projects.
How to sync your booking calendar with Google Calendar in 7 steps
Audit your Google calendars first — Open Google Calendar and list every calendar in the sidebar: primary, ones you created, shared and subscribed. Note which contain real commitments and which are just for information.
Create a dedicated bookings calendar if you want one — In Google Calendar, add a new calendar such as 'Client bookings'. This gives new bookings a clear home and lets you share or colour it separately.
Connect your Google account in Calenix — In your Calenix settings, connect your Google account and review the permissions Google asks you to approve. Only continue if you're comfortable with the access requested.
Choose the calendars to check for conflicts — Tick the calendars that hold real commitments, such as work and personal. Leave out information-only calendars like public holidays or a team 'FYI' calendar unless they should block bookings.
Choose the calendar bookings are added to — Pick one calendar for new bookings, usually your work calendar or the dedicated bookings calendar you created. Check it's one you and anyone who needs to see bookings will look at.
Set availability rules and buffers — Define your bookable hours, time zone and buffers before and after appointments. The calendar sync handles conflicts; your rules decide when you're willing to be booked at all.
Test with a real booking — Add a dummy event to a checked calendar and confirm that slot disappears from your booking page. Then book a slot yourself and check it appears in the right Google calendar.
Which calendars should you check or write to?
| Feature | Check for conflicts? | Write bookings here? | Notes |
|---|---|---|---|
| Primary work calendar | Yes | Often | The default home for most bookings |
| Dedicated bookings calendar | Yes | Yes | Easy to colour, share and filter |
| Personal or family calendar | Yes | No | Blocks time, keeps details private |
| Shared team calendar | Only if events are real commitments | Rarely | FYI events can hide availability |
| Colleague's shared calendar | Usually no | No | Use team scheduling instead |
| Public holidays calendar | Optional | No | Better handled with availability rules |
| Calendar in a second Google account | Yes, if connected | Sometimes | Needs an extra connected calendar |
Best practices for connecting Google Calendar
Write bookings to a single calendar so you always know where to find them.
Check every calendar that holds real commitments, including personal ones, but leave out information-only calendars.
Mark genuinely flexible events, such as 'maybe gym', as free in Google Calendar so they don't block bookings.
Set your Google Calendar time zone and your booking tool's time zone to match, especially if you travel between the UK and Australia.
Review connected apps in your Google Account security settings from time to time and remove any you no longer use.
Keep sensitive client notes out of calendar event titles where others can see them.
Re-test availability whenever you add, remove or share a calendar.
Common Google Calendar sync mistakes
Forgetting to check a personal calendar, then double booking over a medical appointment or family commitment.
Checking a busy shared calendar full of other people's events and wondering why nobody can book you.
Writing bookings to a calendar you've hidden in Google Calendar, so they never appear on screen.
Connecting with the wrong Google account, such as a personal Gmail instead of the Workspace account that holds your work diary.
Assuming a colleague's shared calendar is the same as team scheduling; for shared availability or round robin, use proper team features.
Approving access without reading what's requested, then being surprised later by what the app can see.
Example: a two-person bookkeeping practice in Leeds
Take a fictional bookkeeping practice in Leeds run by two partners, Sam and Priya. Both use Google Workspace for work and personal Gmail for family life. Clients book 30-minute catch-ups and 60-minute onboarding calls, with a spike in enquiries as the 31 January Self Assessment deadline approaches.
Sam's Google Calendar has five calendars: his primary work calendar, a shared 'Office' calendar, UK public holidays, a family calendar shared from his personal Gmail and a 'Client bookings' calendar he creates for this project.
In Calenix he connects his Workspace account and ticks three calendars to check: primary, family and client bookings. He leaves out 'Office', because it's mostly reminders like 'bins out Thursday' and would block half his week, and UK holidays, which he handles through his availability rules instead. New bookings are written to 'Client bookings', which he colours green and shares with Priya.
Because the family calendar is shared into his Workspace account, it shows up among that account's calendars, so one connection covers it and the Free plan's single connected calendar is enough for now. If he later wants to check a separate account directly, the Individual plan supports up to six connected calendars.
He tests by adding a dummy 2pm event to the family calendar and watching the slot vanish from his booking page. In the busy January period, the practice can then take bookings with confidence. For the wider picture of running an accountancy diary, see our guide to appointment scheduling for accountants. If Priya prefers Outlook, the steps in syncing Microsoft Outlook with your booking page are similar.
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