5 Solutions to Merge/Remove Duplicate Contacts on Mac (macOS Mojave Included)

2019-05-24 03:56:58 / Posted by Jose Henline to Utility Follow @ Jose

There are hundreds of contacts in my Mac, I am not able to find and delete those duplicate contacts manually. What should I do? Who can give me some useful advices?

It’s a commonly asked question on Google as to how to remove or merge duplicate contacts on Mac. There could already be duplicates in your Mac Contacts app. Duplicates could also appear after you import contacts from other devices or accounts to Mac. In this article, you will find five easy solutions to help you get rid of Mac contacts duplicates.

Before you remove or merge Mac contacts duplicates, it’s important to back up your contacts first so that you won’t lose needed contacts by accident. Also, it’s recommended to use a reliable contact manager for Mac to identify and deal with duplicate contacts. Without further ado, let’s get started.

The best way to merge or remove Mac contacts duplicates

By using Cisdem ContactsMate, one of the best contact managers for Mac, you can easily find and merge (or delete) duplicate contacts. It offers the following main features.

  • Find and fix issues such as duplicates, blank name, etc.
  • Sync contacts from your accounts like iCloud, Gmail, Facebook, Outlook and more
  • Import contacts from vCard and CSV files
  • Export or convert contacts to 8 formats such as CSV, vCard and Excel
  • Enable users to easily edit, delete, tag, group and manage contacts

Free Download

You can use this app to efficiently manage contacts across platforms and devices such as iCloud, Gmail, LinkedIn, Mac and iPhone.

Merge or remove duplicate contacts on Mac in 3 easy steps

Step 1. Download and install ContactsMate on your Mac. Upon first opening the app, you will see a message asking for permission to access the Mac Contacts app. Click OK. It will automatically sync with Mac Contacts.

main interface

Step 2. In the toolbar at the top of the interface, click Scan, and the Conflict Resolution window will appear. In the panel, you will find the list of contacts duplicates.

Step 3. On the left side of the window, select the action you want to take. Click Fix to see all the versions of the same contact and then click Merge or OK (depending on the action you choose). Now the duplicate contacts on your Mac are gone.

find and merge duplicate contacts on Mac

For different types of Mac contacts duplicates, the available actions can be different.

Type of duplicate Actions
Duplicate name




Exact Duplicate Contacts

Delete duplicate contacts


In addition to the two main types, there are a few other types of contacts duplicates. You can set the app to look for or ignore specific type(s) of duplicates. Just go to File > Preferences > Conflicts.

set to find certain types of duplicate contacts

Pro tips

The steps above show you how to easily handle Mac Contacts duplicates. Here are some tips for different scenarios where Mac users may need to get rid of duplicate contacts.

#1 How to merge iCloud and Mac contacts and avoid duplicates

In ContactsMate, click Add Account in the toolbar. Add your iCloud account. Make sure the select the option Contacts

merge iCloud and Mac contacts

Your iCloud contacts will appear in the left panel. Select and drag them all to the group called On My Mac. Click Scan to find and merge duplicate contacts.

scan for duplicate contacts on Mac

On a side note, to delete duplicate contacts in iCloud on a Windows PC, one can export contacts to vCard and import the file to Google Contacts which has a very basic duplicate removal function.

#2 How to get rid of duplicate contacts on iPhone

If you have no idea how to remove duplicate contacts on your iPhone, the same app can also help you out.

To get started, sync contacts between iCloud and iPhone. In the said app, click Add Account to sync contacts from iCloud. On the left side of the interface, select the group called iCloud and click Scan. Remove or merge the duplicate contacts. Sync again with iCloud. There won’t be any duplicate in your iCloud contacts. Now you can sync them back to iPhone.

Above are only two common examples. You can try the app and enjoy the benefits it has to offer.

4 other solutions to merge or remove Mac contacts duplicates

Solution 1. AddressBook Cleaner

AddressBook Cleaner is a duplicate contacts remover app. To keep your Address Book clean and contacts unique, this app will help users remove duplicate contacts Mac. With this tool, getting rid of Mac contacts duplicates becomes easy. It will help you find out all the duplicate contacts on Mac matched various situations, and marking the ones unwanted automatically. So you can remove duplicate contacts easily.

Steps to merge and remove Mac contacts duplicates:

1. Download AddressBook Cleaner and get it installed.

2. Find out duplicated contacts automatically after you specify the filter conditions.

3. Check duplicate on your Mac.

4. Merge duplicate contacts on Mac. Just click "Delete" button to remove all the marked contacts.

Solutions Two to Merge or Remove Duplicate Contacts on Mac


  1. Find all the contacts which match the predefined fields, and mark the ones to be remove
  2. Support 7 languages including English, Italiano, etc.Support 7 languages including English, Italiano, etc.


  1. Sometimes the sync process is going wrong somewhere along the line and creating duplicate lists of some contacts. You have to take time to find and delete the duplicate contacts by hand

Solution 2. Contacts Cleaner

Contacts Cleaner is a decent application that will go through your contacts and sensibly merge, delete and clean up your contacts. It has an easy to user interface. Users can find duplicated contacts and fields and remove duplicate contacts Mac using it. In addition, with this useful application, Contacts can be changed individually or by checking the "fix all similar" box. Anything with the same issue will be fixed in one go.

Steps to merge and delete Mac contacts duplicates:

1. Before dealing with duplicate contacts on Mac, you need to download Contacts Cleaner, this application doesn’t allow user to try it for free. You need to pay money so that you can download it. After downloaded, it will be installed on your Mac automatically. It is convenient.

2. When you run this application on your Mac, it also will ask you to sync with your Contacts. You need to sync with Contacts, so that you can finish the next step.

3. Next, you need to find duplicate contacts on your Mac. Contacts Cleaner provides multiple conditions for users to choose, you can check on or more condition. And click “OK”, it will start to scan.

4. Wait a minute, you will get results. It will list duplicate contacts for you, you can click “Merge contacts” to merge duplicate contacts on Mac.

Solutions Three to Merge or Remove Duplicate Contacts on Mac


  1. Does a good job of finding and merging duplicate contacts
  2. Can also fix contacts problems such as invalid characters and formatting errors


  1. Currently doesn’t support Exchange or CardDAV

Solution 3. Address Book Clearout

Address Book Clearout can straighten out your contacts, clean up data issues and quickly finds and highlights duplicates to help you merge and eliminate redundant and out-of-date information with a simple but powerful interface, and not only remove duplicates, but find those cards that you put in at different times for the same person. With this application, you can easily find, merge or remove duplicate contacts Mac.

Steps to merge or delete Mac contacts duplicates:

1. Before merging duplicate contacts on Mac, you need to download the app first. This application also not support downloading for free, you need to pay some money for it so that you can try it. And after downloaded, it also will be installed on your Mac automatically.

2. Then you need to set a connection between Contacts with this tool so that you can sync with macOS Contacts.

3. Next, using this application to find duplicate contacts on Mac, after a while, it will send a duplicate scan reports for you.

You can view duplicate scan reports, and click each contact to view details. Then you can choose to remove multiple contacts by one click.

Solutions Four to Merge or Remove Duplicate Contacts on Mac


  1. Clean and easy-to-use interface
  2. Find duplicate contacts quickly


  1. Can freeze unexpectedly, which is rare. Users can send crash reports to the developer. They are very responsive.

Solution 4. Contacts Cleanup

Contacts Cleanup is an easy-to-use application that can help users to find and merge the duplicate contacts into a single contact. User can solve three conflicts by using this application, including duplicate contacts, duplicate phones, and duplicate emails. If you use this tool, merging duplicate contacts on Mac is no longer a difficult task.

Steps for you to merge and remove Mac contacts duplicates:

1. This app is available on Mac App Store, so this application also doesn’t support trying for free. You need to purchase. And all of applications download from Mac App Store will be installed automatically.

2. Next, you need to sync with Contacts. It is a key step that had to be satisfied.

3. This tool also provides many screening conditions for users, you can check the condition you want, one or more. Then it will scan your Contacts to find duplicate contacts on Mac.

4. After finding duplicate contacts, the next thing you should do is merging duplicate contacts on Mac. You can click “Merge Contacts” to finish it.

contacts cleanup mac


  1. Also allows users to back up contacts
  2. Very cheap


  1. Sometimes crashes


The solutions mentioned above can help you get rid of Mac contacts duplicates within minutes. Cisdem ContactsMate for Mac, along with AddressBook Cleaner, allows users to have a free trial, so you can use them for free and check out what they have to offer. The other apps don’t come with a free trial, and you have to pay first. It’s beneficial for users if they can try out an app for free since it’s best way to know if it’s worth buying. In our test, Cisdem ContactsMate can not only merge or remove duplicate contacts Mac effectively but also import contacts from CSV and vCard (VCF), sync contacts from Google, Exchange and social networking sites such as Facebook, allow users to view, add, edit and tag contacts and fix formatting errors, among other things. Which tool do you prefer? Do you know other software to remove duplicate contacts Mac? Just leave a comment below.

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3 Comments Leave a Reply

  • Tobias

    I have 200 contacts in my Contacts, and i don't how many duplicates are there. I will try these apps to remove duplicate contacts and make my Contacts perfect.

    3 years ago REPLY
  • Martinez

    Very comprehensive article. Tks ~

    3 years ago REPLY
  • Lefebvre

    It is surprising that I have over 50 duplicate contacts in my address book. Thanks for the powerful tool from cisdem. It worth its price.

    3 years ago REPLY