How to Sync Multiple Google Calendars from Different Accounts

You'd think Google would make it easy to sync calendars between two Google accounts. After all, it's their ecosystem. But they don't.

If you have a personal Gmail and a work Google Workspace account, your calendars are completely separate. Here's how to fix that.

Why Google Doesn't Sync Calendars Between Accounts

Google treats each account as a separate universe. You can:

View multiple calendars in one interface (by adding accounts to Google Calendar)
Subscribe to another calendar (read-only, no actual event sync)
Share a calendar with another account (but not two-way sync)

What you can't do natively is have events from one account automatically appear on the other - and stay in sync when changes are made.

Why This Matters

The gap causes real problems:

Your coworkers check your work calendar to schedule meetings - they don't see your personal appointments
Your spouse checks your personal calendar - they don't see your work meetings
You get double-booked because availability isn't reflected across accounts

Viewing both calendars on your phone helps you, but it doesn't help others who only see one of your calendars.

Option 1: Manual Event Copying (Free, Tedious)

You could manually create matching events on both calendars. This works if you have very few appointments, but:

You'll forget sometimes
Changes don't sync automatically
Cancellations create orphaned events
It's busywork that adds up

Option 2: Calendar Subscriptions (Free, Read-Only)

Google lets you subscribe to a calendar from another account by URL. The problem: subscriptions are read-only and often delayed by hours. They also don't block time - they just show events.

Option 3: Zapier/Make Automations (Paid, Complex)

You could build automations that create events across accounts. This requires:

Setting up and maintaining automation workflows
Handling edge cases (recurring events, cancellations, updates)
Paying for automation tool subscriptions ($20+/month for useful plans)

Option 4: Dedicated Calendar Sync Tool (Recommended)

Tools like Sync My Calendars exist specifically for this problem. Connect both Google accounts, and events automatically sync between them.

How it works:

Connect your personal Gmail account
Connect your Google Workspace account
Events sync automatically every 3 minutes
Changes in either calendar update both
Synced events are marked with >> so you know the source

Cost: $12/year with a 7-day free trial

Bonus: Private Sync for Sensitive Information

If you don't want personal event details appearing on your work calendar (or vice versa), enable Private Sync. This creates time blocks without copying event titles or descriptions.

Your calendar shows you're busy during that time, but doesn't reveal what you're doing.

Getting Started

Sync My Calendars takes about 5 minutes to set up:

Create an account
Connect your first Google account (OAuth - we never see your password)
Connect your second Google account
Enable Private Sync if desired
Your calendars start syncing immediately