M4B is the same as M4A with a different name: audiobooks and podcasts use it so players remember where you stopped and can jump between chapters. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost. M4B files can be saved as AAC, AIFF, FLAC, M4A, MP3, WAV, WMA, on our server.
What is a M4B file?
M4B – MPEG-4 audiobook (M4B). M4B is the same as M4A with a different name: audiobooks and podcasts use it so players remember where you stopped and can jump between chapters. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost.
How to convert a M4B file
- Click Select File, or drop your .m4b files anywhere on this page.
- Pick the format you want next to each file, for example AAC.
- Click Convert, then Download when it's done.
M4B at a glance
| M4B | |
|---|---|
| Layout | A stream of sound |
| Editable | In audio editors |
| Created by | Apple, 2005 |
| Best for | Audiobooks |
Frequently asked questions
What is a M4B file?
M4B is the same as M4A with a different name: audiobooks and podcasts use it so players remember where you stopped and can jump between chapters. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost.
How do I open a M4B file?
Most media players open M4B files: VLC plays almost every audio format, and the player on your phone or computer handles the common ones. To read it anywhere, convert it to MP3 here.
Is converting M4B files free?
Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.
Are my M4B files uploaded anywhere?
This conversion runs on our server, because converting audio needs ffmpeg, which does not run in a browser. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.
Convert M4B to
- M4B to AAC Converter
- M4B to AIFF Converter
- M4B to FLAC Converter
- M4B to M4A Converter
- M4B to MP3 Converter
- M4B to WAV Converter
- M4B to WMA Converter
Other audio converters
- Audio Converter
- MP3 Converter
- WAV Converter
- M4A Converter
- FLAC Converter
- AAC Converter
- OGA Converter
- OPUS Converter
- WEBA Converter
- WMA Converter
- AIFF Converter
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