ABCDDB Converter

Extract text from Apple Contacts databases (ABCDDB)

Select File
Drop or upload your .ABCDDB file

Online File Converter

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How to extract text from your ABCDDB file

Click the "Select File" button above, and choose your ABCDDB file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.

Convert ABCDDB to another file type

To convert ABCDDB databases to another format, you need Apple Contacts or other Database software.

Convert a file to ABCDDB

To convert other file formats to the "System Database" file type, you need software like Apple Contacts or a similar tool.

About ABCDDB files

An .ABCDDB file is the primary SQLite storage database for the Apple Contacts application (formerly Address Book) on macOS. It acts as the backend repository for all your contact cards, groups, and metadata.

While effective for the operating system, this format is a nightmare for direct user access. It is a hidden system file (typically found in ~/Library/Application Support/AddressBook) locked behind Core Data schemas. Because it is a relational database rather than a flat file, contact details are scattered across dozens of linked tables (like ZABCDRECORD and ZABCDEMAILADDRESS). You cannot simply double-click it to read a phone number, and it is useless to software like Microsoft Outlook or Google Contacts in its raw state. Users often encounter these files when attempting manual data recovery or migration and find themselves stuck with a binary blob that text editors can't read.

Best Conversion Targets:

For Import/Migration: Convert the data to VCF (vCard) or CSV. These are the universal standards accepted by Gmail, Outlook, and mobile devices.
For Analysis/Editing: Since the underlying format is standard SQL, you can convert it to raw SQL commands or view it with database tools.
For Archiving: Exporting to a single ABBU (Apple Address Book Archive) is safer for Mac-to-Mac transfers.

Convert.Guru analyzes your ABCDDB file, detects the exact format, and lets you read the text inside.

Users also converted ABBU, ABCDDB-WAL, ABCDDB-SHM, ZIP, WAB, BUNDLE and BOM files.

FAQ

If you want to convert ABCDDB file to DB, SQLITE, SQLITE3, MDB, ACCDB, DBF, ODB, FDB, GDB, MYD, FRM or SQL, you can use Apple Contacts or similar software from the "Contact Database Storage" category. In the File menu, look for Save As… or Export….

To convert NDF, SQLITE3, BAK, RDB, SQL, DB4, MDF, MDB, LDF, DB, DB3 or SQLITE files to ABCDDB, try Apple Contacts or another comparable tool in the "Contact Database Storage" category.

The ABCDDB Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our ABCDDB converter.