Convert & download

AAX to MP3, without the command line

AAX is the format Audible has used for years to deliver audiobooks. Most AAX-to-MP3 tutorials involve scripts, command-line tools and a lot of trial and error. AudiblePort turns it into a desktop app: sign in, choose your books, click convert.

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How to do it

  1. 1

    Install AudiblePort

    Available for Windows, macOS (Intel and Apple Silicon) and Linux.

  2. 2

    Connect your Audible account

    Sign in inside the app. Your library appears automatically.

  3. 3

    Download and convert

    Download the books you want (free), then convert them to MP3 in one batch.

What is an AAX file?

An .aax file is an Audible audiobook: AAC audio in an MP4-style container, plus the book's chapters, cover and metadata. It's designed to play inside Audible's own apps and a few authorized players, which is why many devices and apps won't open it directly.

Newer Audible titles are often delivered as AAXC instead of AAX. AudiblePort handles both, so you don't need to care which one a book uses.

Library-first instead of file juggling

AudiblePort is built around your Audible library rather than loose files. You don't have to hunt for .aax files, keep track of which book is which, or feed them one by one to a script: the app lists your whole library, downloads the books you choose and converts them in a batch.

  • No scripts, no terminal, no manual file management
  • MP3 at 64, 128 or 192 kbps
  • Split by chapter or keep one file per book
  • Metadata and cover art carried over

Frequently asked questions

Can I convert AAX files I downloaded earlier?

AudiblePort works directly with your Audible library: sign in and it fetches each book for you, so you don't need to locate or manage old .aax files.

What's the difference between AAX and AAXC?

They're two generations of Audible's audiobook format. AAXC is the newer one used for many recent titles. AudiblePort supports both.

Will converting to MP3 reduce quality?

Any MP3 encode is lossy, but for spoken word 128 kbps is practically indistinguishable from the original. Use 192 kbps for music-heavy productions, or pick M4B.