What Is Calendar Sync? Definition & Examples
Two-way integration between your scheduling tool and calendar application to automatically update availability and create events.
Definition
Calendar sync is a bidirectional connection between a scheduling platform and calendar applications (Google Calendar, Outlook, Apple Calendar). When properly synced, personal calendar events block availability on your booking page, and new bookings automatically create calendar events. Two-way sync ensures your booking availability always reflects your true schedule, preventing double-bookings. Understanding this concept is essential for businesses evaluating scheduling technology, as it directly impacts how efficiently teams manage their time and how smoothly clients move through the booking process.
Calendar Sync
A meeting on Google Calendar automatically blocks that time on your booking page
A new booking appears instantly on your Outlook calendar
Multiple calendars (work + personal) combine to show real availability
Rescheduling a booking updates both the scheduling platform and your calendar
Workflow example: Calendar Sync
- 1
A business coach connects her Google Calendar (personal) and her Outlook calendar (client work) on the Standard plan.
- 2
Both calendars are checked for busy times, so a dentist appointment in Google blocks that slot on her booking page.
- 3
She chooses Outlook as the calendar that new bookings are written to.
- 4
A client books a session; SchedulingKit re-checks both calendars at that moment and then adds the event to Outlook.
Why Calendar Sync Matters
Without calendar sync, you'd need to manually update availability every time your schedule changes. This is error-prone and leads to double-bookings or phantom availability. Calendar sync is the foundation of reliable online scheduling.
SchedulingKit — Calendar Sync
SchedulingKit connects to Google Calendar, Outlook/Microsoft 365 and Apple iCloud (using an app-specific password). Busy times from connected calendars are refreshed every 10 minutes for the next 60 days, and availability is checked again at the moment someone books, so a slot you just filled elsewhere is not offered. New bookings are written to the calendar you choose. The Free plan includes 1 calendar connection, Standard up to 6, and Pro and above unlimited.
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When this isn't for you
This definition page is reference-only. If you came here looking for software to handle calendar sync, head to /scheduling-software or /features instead. Skip this page if you're already familiar with the term.