How to? - 3 Steps to Go!
Step 1: Upload M4B files
Add M4B file(s) to the interface above for converting to MP3 or any other formats. Supports converting M4B to audio files in batches.
Step 2: Convert M4B files free
Adjust related parameters if needed. Then, just click CONVERT button to start the conversion process.
Step 3: Save Converted M4B Audio File
When the conversion process is complete, you can preview the file. Click the Download button to save the final files to local or to Dropbox.
Why Choose Media.io to Convert Files?
Watermark and Ads Free
Online UniConverter is a free online video & audio converter, which never adds watermarks or ads to the converted videos.
Support Multiple Formats
Online UniConverter supports a list of video/audio formats, including MP4, MOV, MKV, WAV, and Android/iPhone compatible formats.
Online UniConverter also works with Google Chrome, Safari, Firefox, and your smartphones without limitation.
High Quality Output
The converted files will keep the quality as higher as original, and you can download or save to Dropbox easily.
Privacy and Safety
We keep your information secure all the time. All uploaded files will be deleted from the server after 24 hours.
Easy to Use
We provide clear guide and steps for online conversions. It's easy to use for beginners.