Convert & download

Convert Audible audiobooks to M4B

M4B is the audiobook format: a single file per book with chapter markers, cover art and resume support built in. It's what Apple Books, Audiobookshelf, BookPlayer, Smart AudioBook Player and most dedicated audiobook apps love best. AudiblePort converts your Audible library to M4B locally.

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How to do it

  1. 1

    Install and sign in

    Get AudiblePort for Windows, macOS or Linux and connect your Audible account.

  2. 2

    Pick your books

    Select the titles you want from your synced library and download them — free and unlimited.

  3. 3

    Convert to M4B

    Choose M4B as the output format and start. You get one chaptered M4B per book in your output folder.

M4B vs MP3 for audiobooks

Both formats play almost everywhere, but they solve different problems. M4B keeps the whole book in one tidy file with chapters you can jump between. MP3 is the most compatible format for older hardware that doesn't understand chapters.

  • Pick M4B for audiobook apps, Apple devices and self-hosted servers
  • Pick MP3 for basic MP3 players, car stereos and legacy devices
  • Not sure? Convert to M4B for your library and keep MP3 for the car

What's included in the M4B

AudiblePort writes the book's metadata and cover art into every file, so it shows up correctly in any player or library manager. Chapters come from the book itself, so navigation matches what you had in the Audible app.

  • Chapter markers for easy navigation
  • Title, author, narrator and cover art
  • One file per book, perfect for large libraries
  • Optional per-chapter split if your player prefers separate files

Local and private

Everything runs on your computer. Your Audible sign-in happens inside the desktop app, and neither your credentials nor your audio ever touch our servers.

Frequently asked questions

Which apps play M4B files?

Apple Books, BookPlayer, Smart AudioBook Player, Prologue, Audiobookshelf, VLC and most dedicated audiobook players support M4B with chapters.

Can I play M4B on Android?

Yes. Apps like Smart AudioBook Player, Voice or the Audiobookshelf app play M4B files with chapters on Android.

Do I need a license to convert to M4B?

Yes. Downloading and listening are free; conversion to M4B or MP3 is part of the one-time lifetime license.