Auto-Sync Google Calendar Events to Notion

📌 Why this Automation?

If you live in Notion but still rely on Google Calendar for scheduling, you know the struggle: events live in Calendar, tasks live in Notion, and you have to keep them in sync manually.

That’s time-consuming and a productivity killer. This automation solves that by auto-syncing Google Calendar events to Notion, using only free tools.

No manual copying, no switching tabs, just seamless integration.

🛠 Tools You’ll Need

✅ Make.com (Free plan): for automation
✅ Google Calendar: Event source
✅ Notion: Task/project database
✅ Notion API integration token: For Make.com to connect to Notion

🗂 Step 1. Prepare Your Notion Database

Create a database called Calendar Sync in Notion.
Add columns
- Event Name (Title)
- Start Time (Date)
- End Time (Date)
- Description (Text)
- Location (Text)

💡 Tip: Make sure your Notion database is shared with your integration in Notion → Settings → My Connections.

⚙ Step 2. Plan the Automation Workflow

Logic

Trigger: When a new event is created or updated in Google Calendar.
Action: Create or update the corresponding entry in Notion.

🖥 Step 3. Build the Make.com Scenario

Module 1. Google Calendar: Watch Events

Connect your Google Calendar.
Choose Watch Events.
Set it to check every 15 minutes (free tier).

Module 2. Notion: Create a Database Item

Connect Notion using your integration token.
Map
- Event Name: {{1.Summary}}
- Start Time: {{1. Start DateTime}}
- End Time: {{1.End DateTime}}
- Description: {{1.Description}}
- Location: {{1.Location}}

🧩 Sample Make.com JSON for This Scenario

You can import this JSON into Make.com to get a ready flow.

{
  "name": "Google Calendar to Notion Sync",
  "flow": [
    {
      "id": 1,
      "module": "google-calendar:watchEvents",
      "version": 1,
      "parameters": {
        "calendarId": "primary",
        "maxResults": 10
      }
    },
    {
      "id": 2,
      "module": "notion:createDatabaseItem",
      "version": 1,
      "parameters": {
        "databaseId": "your_notion_database_id_here",
        "properties": {
          "Event Name": "{{1.Summary}}",
          "Start Time": "{{1.Start DateTime}}",
          "End Time": "{{1.End DateTime}}",
          "Description": "{{1.Description}}",
          "Location": "{{1.Location}}"
        }
      }
    }
  ]
}

Replace

your_notion_database_id_here → Get from your Notion database URL.

🔄 Step 4. Scheduling the Sync

Set the scenario to run every 15 minutes (free tier limit).
Now, any new or updated Calendar event will show up in Notion automatically.

Benefits

Single source of truth: Keep tasks & events in Notion.
No manual data entry: Save time.
Always up to date: Calendar changes reflect in Notion.

🌟 Pro Tips

Add a filter in Make.com to sync only events with a specific keyword (e.g., “Client” or “Project”).
Add a reverse sync: Notion to Google Calendar for a two-way connection.
Tag events in Notion with categories like Meeting, Deadline, and Personal.

🛠 Fix – Google Calendar → Notion Sync

Events Not Appearing in Notion
- Check if your Notion database is shared with your integration in Notion → Settings → My Connections.
- Confirm that the database ID in Make.com matches your target database.
Date/Time Format Issues: Notion expects ISO 8601 date format (YYYY-MM-DDTHH:mm:ssZ). Use formatDate() in Make.com if the Google Calendar date is not mapping correctly.
Duplicate Entries for Updated Events: Use the event’s unique ID to check if it already exists in Notion before creating a new entry.
Permission Errors: Reconnect your Notion account in Make.com and refresh the database list if permissions change.
Automation Not Running on Time: The free Make.com plan checks triggers every 15 minutes. Events added less than 15 minutes before the start may not sync instantly.

No-Code Alternative (Free)

Make provides Google Calendar triggers and Notion actions that can keep events and databases in sync automatically. It offers a free tier and lets you design the automation with simple drag-and-drop modules—useful if you want filters, branching, or additional app integrations later.

You can explore it here (free account): https://www.make.com/en/register?pc=rohit9910

📌 Final Thoughts

This Google Calendar Notion sync automation is a game-changer for productivity lovers who want everything in one place without paying for expensive integrations.