M4B to M4A Converter

Batch convert m4b files to m4a format online for free

Choose files or drag & drop them here.
Only you have access to your files.
All files will be deleted after one hour.

How to convert M4B files to M4A online?

Step-by-step guide to convert m4b to m4a using AnyConv. It works on PC (Windows, Mac, Linux) and mobile devices (iPhone, Android).

Upload M4B-file

Drag and drop your M4B file into the upload area. The maximum file size is 100 MB.

M4B to M4A

Click "Convert" to change m4b to m4a. The conversion usually takes a few seconds.

Download your M4A

Now you can download the M4A file. The download link only works on your device.


  • ❓ How can I convert files from M4B to M4A?
    First you need to add file for conversion: drag and drop your M4B file or click the "Choose File" button. Then click the "Convert" button. When M4B to M4A conversion is completed, you can download your M4A file.
  • ⏱️ How long does it take to convert M4B to M4A?
    Audio conversion is pretty fast. You can change M4B to M4A in a few seconds.
  • 🛡️ Is it safe to convert M4B to M4A on AnyConv?
    Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including M4B to M4A) is absolutely safe.
  • 💻 Can I convert M4B to M4A on Mac OS or Linux?
    Yes, you can use AnyConv on any operating system that has a web browser. Our M4B to M4A converter works online and does not require software installation.

Information about M4B and M4A file formats

🔸 File format M4B M4A
🔸 Full name MPEG-4 Audio Layer Bookmarkable File M4A - Audio-only MPEG-4
🔸 File extension .m4b .m4a
🔸 MIME type audio/m4b video/mp4
🔸 Developed by Apple International Organization for Standardization
🔸 Type of format Music File Media container
🔸 Description Audiobook and podcast files containing metadata including chapter markers, images, and hyperlinks can use the extension .m4a but more commonly use the .m4b extension. M4b files support metadata for chapters and bookmarking on supporting players and most commonly uses AAC (Advanced Audio Codec). MPEG-4 Part 14 or MP4 is a digital multimedia container format most commonly used to store video and audio. However, it can also be used to store other data such as subtitles and still images. M4A stands for MPEG 4 Audio and is a filename extension used to represent audio files.
🔸 Technical details The audio in a .m4b file is encoded with the AAC compression format and can therefore be protected with Apple's FairPlay DRM copy protection system. In addition, M4b files can contain metadata as defined by the format standard and, in addition, can contain Extensible Metadata Platform (XMP) metadata. Audio-only MPEG-4 files generally have a .m4a extension. This is especially true of non-protected content. M4A is often compressed using AAC encoding (lossy) but can also be in Apple Lossless format.
🔸 File conversion M4B conversion M4A conversion
🔸 Associated programs Apple QuickTime Player, Apple iTunes Windows Media Player, RealPlayer, MPlayer, Media Player Classic, VLC Media Player, K-Multimedia Player
🔸 Wiki https://en.wikipedia.org/wiki/MPEG-4_Part_14 https://en.wikipedia.org/wiki/MPEG-4_Part_14