How to Merge Calendars on Mac ? 5 Effective Ways

  Amit Patra
Written By Amit Patra
Anuraag Singh
Approved By Anuraag Singh  
Modified On January 19th, 2026
Reading Time 5 Minutes Reading

These days, using multiple calendars on your Mac can leads to missing appointments, duplicate events, and other confusion. If your schedule is spread across Apple Calendar, Google Calendar, or Outlook, learning how to merge calendars on Mac becomes important for being organized.

In this guide, you will learn reliable solutions, including manual methods and expert solutions to combine calendars easily on MacOS, ensuring all your important data is kept safe and secure.

Why Do You Need to Combine Calendars on Mac?

Mac users depend on multiple calendars sources such as iCloud, Google, and Outlook. But these calendars contain overlapping of events which leads to issues. To prevent these problems to occur, learning how to merge calendars on Mac gives you various advantages such as:

  • It provides a unified view of the calendars
  • It reduces the risk of missing important events.
  • Combining the calendars for better productivity and time management.
  • It helps in sharing and syncing across devices easily.

How to Merge Calendars on Mac Using Apple Calendar?

Apple Calendar offers a built-in option to merge the calendars that are stored in the same account. Also in this section, you will know the steps to merge your calendar on MacOS throught Apple Calendar:

  1. At first, you need to open the Calendar application on your Mac.
  2. Then, from the menu bar click on the view option and select show calendar list.
  3. Now, in the left-panel, locate the calendars you want to merge.
  4. Now, make sure your both Calendar belongs to the same account like iCloud.
  5. Then, drag the events from one calendar to another calendar.
  6. Once, when all the events are moved, delete the empty calendar if no longer needed.

How to Join Google Calendars on Mac?

Here you will learn how to merge calendars on Mac through Google Calendar before syncing them with the mac operating system using the steps given below:

  1. First, open the Google Calendar in your browser.
  2. Now, click on the settings icon and choose the settings.
  3. After this, select the calendar you want to merge.
  4. After choosing, use the export calendar option to download it as an ICS file..
  5. Then, import the ICS file into another Google Calendar.
  6. At last, sync the Google Calendar with Apple Calendar on your Mac.

Simply Combine Outlook Calendars on Mac

Users often face challenges during the calendar combining process. In this method, you will know how to merge calendars on Mac in Outlook using the mentioned steps for better clarity.

However, if you face issues while importing or syncing the calendars during this process, you can go through our detailed guide Couldn’t Import Calendar Try Again Later Outlook Error Fixed, which tells the causes and an easy solution to solve the problem before going further.

  1. Open the Microsoft Outlook application for Mac.
  2. Then, go to the calendar section.
  3. Now, select the calendar you want to export.
  4. Then, choose the file option and click on the export button.
  5. After choosing, save the calendar as an ICS file.
  6. Now, import the ICS file using the File option and then import.
  7. At last, move the events into a single calendar.

How to Merge Calendars on Mac Through iCloud?

If your calendars are linked with different Apple ids or devices, iCloud can help to you to combine them easily. Also, we have provided the steps below for this method for your ease.

  1. First, sign into your iCloud.com using your Apple ID.
  2. Then, open the web app of the calendar.
  3. Now, share one calendar with another iCloud account.
  4. After this, accept the shared calendar invitation.
  5. Now, copy or move the events into a single calendar file.
  6. At last, sync the changes back to your Mac.

Disadvantages of Using Manual Methods

User-friendly solutions come up with various disadvantages while merging the calendars into one on macOS such as:

  1. These solutions are time-consuming when importing calendar that contains a large number of events.
  2. There is a high risk of human error, such as the missing or deletion of events and appointments.
  3. The manual method does not automatically find or remove the events that are duplicates, and leads to cluttering of calendars.
  4. These techniques are impractical when you’re joining multiple calendars or large ICS files.
  5. These solutions do not provide an option to preview the merged data before finalizing the changes in the calendar.

How to Merge Calendars on Mac Via Proficient Solution?

For users who are looking for a faster and more effective way, using a robust solution is an ideal choice. The SysTools ICS Merger Tool is an automated utility that is designed to merge multiple ICS calendar files into one quickly without any data loss.

1. First Download and launch the above-mentioned tool.

2. Then, select the merge ICS files option from the tab.

choose merge ics files

2. Now, click on the Add File or Folder option.

 choose add file or folder option

3. Then, select the ICS files and click on the open button.

click on the open button

4. Now, select the additional options such as merge with Date range or file size.

choose merge filters like size and date range

5. Once the merge process is completed, click on the OK option.

click on the Ok button

6. At last, click on the View report option for brief analysis.

click on view report option

Wrapping Up

In this blog, we have learnt how to merge calendars on Mac using manual methods such as Outlook, Google Calendar, iCloud, and Apple Calendar with their limitations. Also, we have mentioned an expert solution that helps to merge multiple calendars in bulk, which saves time without any data corruption.