How to Connect Trello to Google Calendar (2026 Guide)
Why This Integration Matters
The integration of Trello and Google Calendar solves the workflow problem of manually updating calendars with task deadlines and due dates. This integration automates the process, ensuring that team members and stakeholders have the most up-to-date information.
- Time Saved: 5 hours/week
- Use Case: Managing project deadlines and scheduling team meetings.
Quick Setup (Under 5 Minutes)
Prerequisites
- Active Trello account (any tier)
- Active Google Calendar account (any tier)
- Admin access to both Trello and Google Calendar
Step-by-Step Connection
Method 1: Native Integration
- In Trello, go to Settings > Integrations
- Search for Google Calendar
- Click Connect and authorize
- Configure sync options, such as mapping Trello boards to Google Calendar events
Method 2: Via Zapier/Make If native integration is limited:
- Create a new Zap/Scenario
- Set Trello as trigger (e.g., “New Card”)
- Set Google Calendar as action (e.g., “Create Event”)
- Map fields accordingly, such as card title to event title and due date to event date
Common Workflows
Workflow 1: Trello to Google Calendar
| Trigger | Action | Result |
|---|---|---|
| New Card in Trello | Create Event in Google Calendar | Trello card due date is synced to Google Calendar event |
Workflow 2: Reverse Sync
Google Calendar events can also be synced back to Trello, allowing for bidirectional data flow. For example, updating an event in Google Calendar can update the corresponding Trello card.
Troubleshooting
Connection Errors
- “Authentication Failed”: Reauthorize with fresh tokens
- “Rate Limited”: Reduce sync frequency to every 15 minutes
- “Missing Fields”: Check required field mapping, such as ensuring that the Trello card due date is mapped to the Google Calendar event date
Pro Tips
Power User Tip: Set up error notifications in Slack so you know immediately when sync breaks. This can be done by creating a new Zap that triggers on Trello or Google Calendar errors and sends a notification to a designated Slack channel.
Limitations to Know
- Trello’s native integration with Google Calendar only supports syncing of card due dates, not start dates.
- Google Calendar has a rate limit of 1000 requests per day, which can be exceeded if syncing a large number of Trello cards.
- The free tier of Trello has limited integration capabilities, while the paid tier offers more advanced features, such as custom field mapping.
FAQ
Q: Does this work with the free tier of Trello? A: Yes, but with limited integration capabilities. The paid tier offers more advanced features.
Q: How often does data sync? A: Data syncs in real-time, but can be scheduled to sync at regular intervals (e.g., every 15 minutes) to avoid exceeding rate limits.
Q: Can I sync historical data? A: Yes, but only for Trello cards created after the integration is set up. Historical data can be backfilled manually by updating the due dates of existing Trello cards.
🔗 Related Integrations
Discover more integrations and automation guides.