The Complete Guide to Syncing Outlook and Google Calendar

Microsoft and Google don't make it easy to keep Outlook and Google Calendar in sync. This guide covers all your options - free workarounds, built-in features, and dedicated sync tools - so you can choose what works best for your situation.

Why Sync Outlook and Google Calendar?

Common scenarios where you need both calendars in sync:

• Work/personal split: Office uses Outlook, personal life on Gmail
• Device compatibility: Android widgets only show Google Calendar
• Client work: Client uses Microsoft, you prefer Google (or vice versa)
• Family coordination: Shared family calendar on Google, work on Outlook

Option 1: View Both Calendars in One App

What it does: Add your Google account to Outlook (or your Outlook account to Google Calendar) to see both calendars in one view.

Pros: Free, built-in, no third-party tools

Cons: Calendars remain separate - events don't actually sync. When someone checks your Outlook availability, they don't see your Google events (and vice versa). This helps you but doesn't help others.

Best for: Personal use only when no one else needs to check your availability

Option 2: Calendar Subscriptions (ICS)

What it does: Subscribe to your Google Calendar from Outlook (or vice versa) using an ICS URL.

Pros: Free, shows events from other calendar

Cons:

• Read-only - you can't edit subscribed events
• Updates are delayed (sometimes hours)
• One-way only - you'd need subscriptions in both directions
• Doesn't actually block time for scheduling purposes in Outlook

Best for: Reference purposes when real-time sync isn't critical

Option 3: Power Automate / Zapier

What it does: Create automated workflows that copy events between calendars.

Pros: Flexible, can be customized

Cons:

• Requires building and maintaining workflows
• Edge cases are tricky (recurring events, cancellations, attendee updates)
• Automation tools cost money for meaningful usage ($15-30+/month)
• Can break when APIs change

Best for: Teams with technical resources who need custom logic

Option 4: Desktop Sync Apps

What it does: Apps like Outlook Google Calendar Sync run on your computer and sync calendars in the background.

Pros: Some are free, runs locally

Cons:

• Computer must be running for sync to happen
• Often require technical setup
• May not handle all event types reliably
• No sync when traveling without laptop

Best for: Users comfortable with desktop software who are usually at their computer

Option 5: Cloud-Based Calendar Sync Service

What it does: Services like Sync My Calendars run in the cloud, connecting to both calendars and keeping them synchronized automatically.

Pros:

• Works 24/7 without your computer running
• Handles edge cases (recurring events, updates, cancellations)
• Two-way sync - changes in either calendar propagate to both
• Privacy options (sync time blocks only, not details)
• Set up once, runs continuously

Cons: Paid service (though typically cheaper than automation tools)

Best for: Most users who want reliable, hands-off synchronization

Comparing the Options

*ICS subscriptions update with significant delays

Our Recommendation

For most people, a cloud-based sync service offers the best balance of reliability, simplicity, and cost.

Sync My Calendars syncs every 3 minutes, handles all the edge cases automatically, and costs $12/year ($1/month). You can also enable Private Sync if you don't want event details crossing between work and personal calendars.

Try it free for 7 days to see if it works for your setup.