How to Sync Birthdays Across Multiple Google Accounts

Managing birthdays across multiple Google accounts means each account holds its own birthday calendar, and changes in one won't appear in another. You can manually export and import birthday calendars between accounts, or use CalSync to automatically copy birthday events every five minutes so all your accounts stay current.

Most people handle multiple Google accounts for work and personal use. Birthdays in your personal Contacts remain invisible to your work calendar until you bridge the two accounts. How to set up google calendar birthday reminders in 2024 walks through reminder settings for a single account; this guide covers keeping birthdays visible across all your accounts.

Can I sync birthday calendars using native Google tools?

Google Contacts creates a birthday calendar automatically when you add birth dates to your contacts. Each Google account has its own Contacts database, so each birthday calendar is separate.

To move birthdays between your Google accounts manually:

1. Open Google Calendar and locate the Birthdays calendar in the left sidebar (under "Other calendars").
2. Click the three-dot menu next to Birthdays and select Settings and sharing.
3. Scroll to Integrate calendar and copy the Secret address in iCal format.
4. Switch to your second Google account. Open Google Calendar and click the + next to "Other calendars."
5. Choose "From URL," paste the iCal link, and click Add calendar.

This approach shows birthdays from Account A inside Account B, but it's read-only. When you add a new contact birthday in Account A, Account B updates within 24 hours. iCal subscriptions are one-way only. Account B sees Account A birthdays within 24 hours, but the reverse doesn't happen (Account A won't pull from Account B through the same link). If you need bidirectional visibility, you must set up a second subscription pointing the other direction.

If you manage more than two accounts or update birthdays frequently, you'll spend time subscribing to multiple iCal feeds and troubleshooting refresh delays. How to sync two different google calendars explains similar limitations for general event syncing.

How does CalSync keep birthdays synchronized automatically?

CalSync copies events from one Google Calendar to another every five minutes, including birthday entries. Because birthday calendars are standard Google Calendar feeds, CalSync treats them like any other event source.

Set it up in under 2 minutes:

1. Sign in to CalSync with the Google account that will receive birthday events.
2. Authorize CalSync to access your Google Calendars (read and write permissions).
3. Add the source Google account (the one holding the birthday calendar you want to copy).
4. Select the Birthdays calendar as the source and choose the destination calendar in your primary account.
5. Pick your sync direction (one-way or two-way) and privacy level (full event details or busy-only blocking).

CalSync runs in the background and copies changes to birthday events. If you add a contact birthday in Account A at 9:00 a.m., it appears in Account B by 9:05 a.m. You get unlimited calendars and unlimited merges for $2.99/mo with no long-term contracts (cancel anytime). A 3-day free trial lets you test the workflow before subscribing.

Google calendar sharing permissions explained covers the difference between sharing (granting view access) and syncing (copying events into a calendar you control).

Which method should I use?

Use the native iCal subscription if you manage two accounts, rarely add new contacts, and don't mind waiting up to 24 hours for updates. It's free and requires no third-party access.

Choose CalSync when you:

• Work across three or more Google accounts and want every birthday visible in each one.
• Add or edit contact birthdays frequently and need updates to propagate within minutes.
• Prefer two-way sync so birthdays added in any account flow to all the others.

Bonus: CalSync merges birthdays with other events in one view, prevents loops across bidirectional syncs, and refreshes every 5 minutes so you'll never miss a birthday because it hadn't updated.

Frequently asked questions

Can I sync birthdays from Google Contacts to Outlook or Apple Calendar? Google's birthday calendar exports as an iCal feed, so you can subscribe to it in Outlook or Apple Calendar. CalSync works only with Google Workspace accounts, so if your destination is Outlook or iCloud you'll need the native iCal subscription method.

Will deleting a contact birthday in one account remove it from synced calendars? With the iCal subscription method, deletions propagate within 24 hours. CalSync detects deletions during the next 5-minute sync cycle and removes the corresponding event from the destination calendar if you've enabled two-way sync or delete mirroring.

Do I need to re-subscribe every time I add a new Google account? Yes for the native method: each new account requires its own iCal subscription setup. CalSync lets you add unlimited accounts in the dashboard and configure sync rules once; new accounts join the sync pool without rebuilding subscriptions.

Can I sync only some birthdays instead of the entire birthday calendar? Google's birthday calendar is all-or-nothing: it includes every contact with a birth date. CalSync copies the entire source calendar but lets you apply event filters (by keyword or creator) if you want to exclude specific entries. For finer control, create a separate custom calendar and manually add the birthdays you want to share, then sync that calendar instead.

Bridge your birthday calendars across Google accounts

Syncing birthdays across multiple Google accounts eliminates the gap between your personal contact list and your work calendar. Native iCal subscriptions work for simple two-account setups, while CalSync handles complex multi-account workflows with automatic updates every five minutes.

Ready to stop missing birthdays because they live in the wrong account? Try CalSync free for three days and see every birthday update flow across your Google Workspace accounts in real time. How to set up google calendar birthday reminders in 2024 shows you how to configure alerts once your birthdays are synced across all your accounts.