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You can create Google Calendar events from Google Sheets with Google Apps Script, a no-code automation workflow, or a Google Workspace Marketplace add-on. Choose based on how much control you need, then map each row’s event details to Calendar fields and test dates, time zones, permissions, and duplicate behavior before processing the whole sheet.

Choose how to connect Sheets to Calendar

Method Best fit What to know
Google Apps Script Custom field mapping, validation, or duplicate handling Google’s Calendar service lets scripts access and modify calendars and events. Its Calendar-timesheet sample demonstrates Calendar and Spreadsheet services, but synchronizes Calendar data into a spreadsheet; adapt the pattern for the reverse direction rather than treating it as a ready-made Sheets-to-Calendar script. Apps Script Calendar service and Calendar-timesheet sample.
Zapier A visual trigger-and-action workflow without writing a custom script Zapier documents triggering on a new Sheets row and creating a Calendar event. Its event action includes calendar, summary, description, location, start and end date/time, repeat settings, and all-day status. Separate workflows cover updated rows and finding or updating existing events. Google Sheets and Google Calendar integrations.
Google Workspace Marketplace add-on An installed interface for creating events from sheet rows or Forms submissions Calendar Events Creator by New Addons is listed for this purpose. The listing reports an update on May 28, 2026; review its current permissions, pricing, publisher details, and compatibility before installing. Marketplace listing.

For a custom script that calls the Calendar API, Google also provides an Apps Script Calendar API quickstart that explains making API requests and adding the required service.

Prepare the spreadsheet and calendar

Set up one event per row

Use clear headers and keep each event’s data in its own row. At minimum, include an event title, start date and time, and end date and time. Add columns for description, location, attendees, or all-day status only if your chosen workflow supports and needs them.

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Confirm destination access

Choose the calendar where events should appear and make sure the account connected to your automation can add or manage events there. Zapier says connecting a Calendar account requires permission to view, add, or manage events on the target calendar. Its Free plan checks some polling triggers every 15 minutes; check the current plan details for the specific trigger you select. Zapier’s Google Calendar setup guidance.

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Set up the workflow

With Apps Script

  1. Open the spreadsheet and select Extensions > Apps Script to open a script project associated with it.
  2. Use the Apps Script Calendar service or, if your implementation needs it, follow Google’s Calendar API quickstart to add the required service and make API requests.
  3. Read the sheet rows, map the relevant columns to event fields, and define validation and duplicate-handling behavior for your use case.
  4. Run the script on a single test row first. Review its requested permissions and check the resulting event in the destination calendar before processing more rows.

Google documents the Calendar service’s ability to access and modify calendars and events, but its timesheet sample moves data from Calendar into Sheets. It is a useful reference for the services involved, not a complete reverse-direction event-creation recipe.

With Zapier

  1. Create a Zap with Google Sheets as the trigger app and select a new-row trigger for the spreadsheet you want to monitor.
  2. Connect the spreadsheet account and select the spreadsheet and worksheet, then test the trigger with a representative row.
  3. Add Google Calendar as the action app and choose the event-creation action.
  4. Select the destination calendar and map the row’s title, start and end date/time, and any supported optional fields, such as description, location, repeat settings, or all-day status.
  5. Test the action and inspect the created event before turning on the workflow.

If edits to existing rows should change Calendar events, choose an updated-row or find-and-update workflow rather than assuming a new-row trigger will handle edits. Confirm how the specific configuration matches a sheet row to an existing event; the integration listing does not establish duplicate protection for every setup.

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With a Marketplace add-on

  1. Open the Calendar Events Creator listing in Google Workspace Marketplace and review its current publisher details, permissions, pricing, and compatibility.
  2. Install it only if its requested access and setup meet your organization’s requirements.
  3. Follow the add-on’s current instructions to select the sheet or form data, map columns to Calendar fields, and choose the destination calendar.
  4. Create a test event and verify its details in Calendar before enabling any automatic processing.

Test dates, all-day events, and repeat behavior

  • Time zones: Use representative timed events and confirm the resulting start and end times in the intended calendar. The source material does not establish one universal time-zone rule across scripts, connectors, and add-ons.
  • All-day events: Test one if your sheet contains them. Zapier’s help documentation says an all-day event ends at midnight on the last day, so that end date is not included in the visible duration. Check Zapier’s event setup guidance.
  • Edits and retries: Decide whether later sheet edits should update an event, create another event, or be ignored. Establish how the workflow identifies an event that already exists before enabling repeated processing.
  • Optional fields: Verify the title, description, location, attendees, recurrence, and all-day setting that you actually mapped; do not assume every method supports the same fields.

Verify before processing the full sheet

  1. Create or trigger one representative row, including an all-day row if relevant.
  2. Open the event in the intended calendar and check its title, date, start and end times, time zone, and optional fields.
  3. Test what happens when a row is edited or processed again, and confirm whether it updates the existing event or creates another one.
  4. Only then enable the recurring workflow or process additional rows.

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