How to Transfer Thunderbird Address Book to Outlook Contacts

Mozilla Thunderbird is a widely used desktop email program generally preferred by professionals for email and newsgroup purposes. Along with these both functions, Thunderbird also allows to store personal as well as business contacts in their address book. But when someone requires to use Thunderbird contacts in MS Outlook that time he/she think about how to export Thunderbird contacts to Outlook address book.

Transferring Thunderbird address book to Outlook contacts is not a big challenge because Thunderbird allows exporting Address Book contacts to a CSV file which is already supported by MS Outlook and other email program.

Steps to Export Thunderbird Address Book Contacts to MS Outlook.

Now without taking more time, I am going to explore easy stepwise guide for transferring Thunderbird Address Book to Outlook contacts. I have divided the entire process in two sections as shown below.

I. Export Thunderbird Address Book to CSV File

In the first half section you will find how to export Mozilla Thunderbird contacts to MS Outlook.

  • Open Mozilla Thunderbird and move to Address Book

    open thunderbird

  • Now choose Address book and click on the Export button from the Tool menu

    choose address book

  • Provide destination location and file name. Choose “Comma Separated (* .csv)” from the save as type and click on the Save button. That’s it.

    save contacts to csv

II. Import Resulting CSV File in MS Outlook 2019, 2016, 2013, 2010 and 2007

Next half section will guide you how to import contacts stored in a .csv file into Microsoft Outlook. So follow stepwise instructions to complete the task.

  • Now launch the MS Outlook and Go to menu – File >>  Open >> Import. For Outlook 2007 & 2003, go to File >> Import & Export.
  • Select  “Import from another program or file” and click the Next button.

    select import from another program option

  • Choose “Comma Separated Values (Windows)” and press Next button

    choose CSV format option

  • Select the CSV file by clicking on the Browse button, then press Next.

    select csv file

  • Choose a destination Outlook folder where you want to Import Thunderbird contacts and click the Next button.

    import thunderbird contacts to outlook

  • Map custom fields (if required) otherwise click the Finish button.

    map fields

  • Finally, transferring Thunderbird Address Book to Outlook contacts, wait for a while.

    transfer thunderbird address book to outlook

Some Common Queries

How to Map the fields of Thunderbird contacts to Outlook Address book?

While importing the CSV file, a Map Custom Field option will appear. Click on it and drag values from left panel to right panel. Do the opposite for removing the values. Make sure to map fields to proper destination.

Is the procedure completely free?

Yes, the process to import Thunderbird address book to Outlook can be performed manually and hence is a completely free procedure.

How can I import emails along with contacts to Outlook?

For emails, a different set of procedure needs to be followed. Find it here:


Above both sections will make sure how to export Thunderbird contacts and import into MS Outlook. If you also want to migrate email then go for a professional Thunderbird to Outlook Converter. You can also download its free demo version from below: