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Calendar Integrations

How to Check Google Calendar Availability From a Website

Bookux Team•

How to Check Google Calendar Availability From a Website

Your website can query Google Calendar for real-time availability.

The Process

1. Customer selects a date
2. Website requests availability
3. Backend queries Google Calendar
4. Calculate free slots
5. Display to customer

Free/Busy API

Google provides a free/busy endpoint that returns busy time ranges.

Your application calculates available slots from this.

Calculating Slots

Given:

  • Busy times from Google

  • Business hours

  • Appointment duration

  • Buffer time

Calculate available windows.

Security

Never expose Google credentials in frontend.

All API calls go through your backend.

Caching

Short-term caching can reduce API calls.

Invalidate when bookings occur.

Bookux

Bookux builds availability checking into custom booking interfaces.

Related: Google Calendar API · Real-Time Availability

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