M4B Converter

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Convert M4B files online for free

This freeware M4B converter online lets you easily change your file formats in a few clicks. To convert M4B, simply add your audio to the software and start converting. If you need an app with a wider array of conversion features, download a trial desktop version of this online tool for free for Windows or Mac.

What is M4B?

Full name

MPEG-4 Audiobook File

Format type

Audio

Developed by

Apple

Description

Apple created the M4B format for playback of audiobooks, radio programs, and podcasts. The main feature that distinguishes the M4B file type is that the files support the use of bookmarks, so the listener can return to a previously defined point. If you’re wondering how to open M4B audio tracks, refer to the associated programs below.

File extension

.m4b

Technical details

Files with the M4B specifications are exclusively encoded with either lossy AAC or the Apple Lossless codecs. The contents of an M4B file can be protected with DRM (Digital Rights Management). In this case, users will need a corresponding (possibly fee-based) license to play these M4B audio tracks.

Associated programs

iTunes, QuickTime Player, Windows Media Player, and VLC