How to Sync Google Calendar with Apple Calendar in 2025

The Gist

If you're trying to manage your schedule across both Google and Apple, you're going to miss meetings. Here's how to fix it:

For a simple, view-only calendar: Add your Google account directly to your iPhone or Mac's settings. This will let you see your Google events in the Apple Calendar app.
To actually block off your time: The built-in settings only let you see all your events. To stop other people from double-booking you, you need a sync tool like Caltsu.
If events aren't showing up: Check your "Fetch" settings. Your phone might be trying to save battery by not updating your calendar.
If some calendars are missing: You might need to check Google's hidden sync settings page to make sure all your shared calendars are visible.

You live on your iPhone, but your work runs on Google Calendar. It's the classic tech giant rivalry, but played out on your schedule.

Constantly switching between apps just to see what you have next is annoying. Worse, it's a recipe for disaster. One day you'll forget to check the Google app, and you'll miss a client call because you were only looking at your personal Apple Calendar.

You need to see everything in one place.

Getting these two to play nice isn't that hard, but there are two very different ways to do it. One lets you view everything in one place, and the other lets you block off your time so you don't get double-booked.

Here's how to sync your Google and Apple calendars in 2025.

Why Sync Your Google and Apple Calendars?

If you have an iPhone, the built-in Apple Calendar app is deeply integrated with the rest of the operating system. It works with Siri, it shows up on your widgets, and it appears on your Apple Watch. The Google Calendar app doesn't have that same level of integration.

By syncing them, you get:

One unified view: See your personal iCloud events and your work Google events on the same screen.
Siri integration: "Hey Siri, what's my next meeting?" will actually work for your work meetings.
CarPlay support: The address for your next meeting will pop up on your car's dashboard automatically.

But you need to understand the limitations of the standard method. It lets you see your Google events on your iPhone, but it does not copy those events to your iCloud calendar. We'll explain why that matters in a minute.

Method 1: The Standard Way (Adding Your Google Account to Your iPhone or Mac)

This is the method most people are looking for. It turns your Apple Calendar app into a window for viewing your Google Calendar.

How to Sync on Your iPhone or iPad

This takes about 45 seconds.

Open the Settings app on your iPhone.
Scroll down and tap Calendar.
Tap Accounts.
Tap Add Account.
Choose Google.
Sign in with your Google email and password.
After you sign in, you'll see a list of Google services you can sync (Mail, Contacts, Calendars).
Make sure the "Calendars" switch is ON (green).
Tap Save.

That's it. Wait a couple of minutes, then open your Apple Calendar app. You should see your Google events start to appear.

How to Sync on Your Mac

If you work on a MacBook, you'll want to do the same thing there.

Click the Apple Menu () in the top left corner.
Choose System Settings.
Click Internet Accounts.
Click Add Account and choose Google.
Sign in to your Google account.
Click Allow to give your Mac permission to access your account.
Make sure Calendars is checked.
Click Done.

Now, open the Calendar app on your Mac. Press Cmd + R to refresh it, and your Google meetings should appear.

Method 2: The Privacy-Focused Way (Using Caltsu)

The method above has one huge flaw: the fake free time problem.

Let's say you have a dentist appointment on your personal Apple Calendar at 2:00 PM. You've also synced your work Google Calendar to your phone so you can see it.

You can see the dentist appointment and know that you're busy.
Your boss, looking at your Google Calendar, sees that 2:00 PM slot as completely empty.

Why? Because your Apple Calendar is just displaying your Google events. It's not actually copying your personal "Busy" status over to your Google Calendar. Your boss schedules a meeting at 2:00 PM, and now you're double-booked.

To fix this, you need a sync tool like Caltsu.

Caltsu creates actual copies of your events between your calendars so your availability is accurate everywhere, without sharing your private details.

How to set it up:

Create a Caltsu account.
Connect your accounts. Link your Google Calendar and your iCloud Calendar.
Create a sync. Tell Caltsu to sync from your Apple Calendar to your Google Calendar.
Choose your privacy settings. Select "Sync as Busy."

Now, when you add that dentist appointment to your iPhone, Caltsu will instantly create a new event on your Google Calendar that just says "Busy." Your boss will see that you're unavailable, but you'll still see the real details of your appointment. No more double-bookings, and no more sharing your personal life with the whole company.

How to Troubleshoot Your Google and Apple Calendar Sync

If you followed the steps above and your calendar is still empty, check these common problems.

1. The Hidden "Sync Select" Setting

This is the most common issue for people who use a lot of different Google calendars. Google has a hidden settings page that controls which of your calendars are visible to other apps.

If your main calendar is showing up but your "Team Holidays" or "Shared Project" calendars are missing:

Go to calendar.google.com/syncselect in your web browser.
Make sure the boxes next to the missing calendars are checked.
Click Save.
Refresh your Apple Calendar app.

2. The "Fetch Data" Setting (on Your iPhone)

If updates are slow—for example, you add an event on your laptop, but it takes hours to show up on your phone—your "Fetch" settings might be set to "Manual" to save battery.

Go to Settings > Calendar > Accounts > Fetch New Data.
Make sure "Push" is turned on.
If Push isn't available for that account, set the Fetch schedule to Every 15 Minutes.

3. The "Default Calendar" Trap

If you create an event on your iPhone and it never shows up on your work computer, you probably saved it to the wrong calendar.

Go to Settings > Calendar.
Scroll down to Default Calendar.
Change this to the calendar you use most often (for example, your main Google work calendar).

A Few Pro Tips

Once you have everything synced, here are a few tips to keep it organized.

Use Color-Coding

Don't let your calendars choose random colors.

Open the Apple Calendar app.
Tap Calendars at the bottom.
Tap the (i) info icon next to a calendar.
Pick a specific color. Make all your work calendars red and all your personal calendars blue.

Use "Travel Time"

When you create an event in your Apple Calendar, you can add a location. Then, tap Travel Time and turn it on. Apple will calculate the traffic and block out the necessary driving time before your meeting. If you use Caltsu, that travel time will also sync to your Google Calendar.

Clean Up Your View

If you have a lot of shared calendars, your view can get cluttered. Open your calendar list and uncheck any calendars you don't use every day. You don't have to delete them—just hide them.

Conclusion

Syncing your Google and Apple calendars is the first step toward getting control of your schedule.

If you just need to see all your appointments in one place, the built-in iPhone settings work great. It’s free and only takes a minute to set up.

But if you're a professional who needs to protect your time, you need more than just a combined view. You need to protect your availability.

Caltsu bridges the gap between your personal life on your iPhone and your professional life in Google. It runs in the background, keeping your availability updated across both platforms so you never have to send an embarrassing "I have to reschedule" email again.

How to Sync Google Calendar and Apple Calendar (2025)