# M4B converter

> Convert M4B files to MP3, WAV, M4A, FLAC and more. Free, fast and private — most conversions run right in your browser. M4B is an MP4 audio file flagged as an audiobook, supporting chapters and resume position.

URL: https://www.converterrr.com/m4b-converter

- MPEG-4 Audiobook (M4B), audio format. [Audio converter](https://www.converterrr.com/audio-converter).
- Converts to 18 formats, 17 of them in the browser; 43 formats convert to M4B.

## About the M4B format

M4B is an MP4 audio file flagged as an audiobook, supporting chapters and resume position.

|  | M4B |
| --- | --- |
| Full name | MPEG-4 Audiobook |
| Type | Audio |
| Extensions | .m4b |
| MIME type | audio/mp4 |
| Best for | audiobooks on Apple Books and other players |
| Properties | lossy compression |

## Convert M4B to… (18)

- [M4B to MP3](https://www.converterrr.com/m4b-to-mp3) (in the browser)
- [M4B to WAV](https://www.converterrr.com/m4b-to-wav) (in the browser)
- [M4B to M4A](https://www.converterrr.com/m4b-to-m4a) (in the browser)
- [M4B to FLAC](https://www.converterrr.com/m4b-to-flac) (in the browser)
- [M4B to AAC](https://www.converterrr.com/m4b-to-aac) (in the browser)
- [M4B to OGG](https://www.converterrr.com/m4b-to-ogg) (in the browser)
- [M4B to Opus](https://www.converterrr.com/m4b-to-opus) (in the browser)
- [M4B to WMA](https://www.converterrr.com/m4b-to-wma) (in the browser)
- [M4B to AIFF](https://www.converterrr.com/m4b-to-aiff) (in the browser)
- [M4B to AMR](https://www.converterrr.com/m4b-to-amr) (cloud)
- [M4B to AC3](https://www.converterrr.com/m4b-to-ac3) (in the browser)
- [M4B to MP2](https://www.converterrr.com/m4b-to-mp2) (in the browser)
- [M4B to WEBA](https://www.converterrr.com/m4b-to-weba) (in the browser)
- [M4B to OGA](https://www.converterrr.com/m4b-to-oga) (in the browser)
- [M4B to MKA](https://www.converterrr.com/m4b-to-mka) (in the browser)
- [M4B to WV](https://www.converterrr.com/m4b-to-wv) (in the browser)
- [M4B to AU](https://www.converterrr.com/m4b-to-au) (in the browser)
- [M4B to TTA](https://www.converterrr.com/m4b-to-tta) (in the browser)

## Convert to M4B from… (43)

- [MP3 to M4B](https://www.converterrr.com/mp3-to-m4b) (in the browser)
- [MP4 to M4B](https://www.converterrr.com/mp4-to-m4b) (in the browser)
- [WAV to M4B](https://www.converterrr.com/wav-to-m4b) (in the browser)
- [MOV to M4B](https://www.converterrr.com/mov-to-m4b) (in the browser)
- [M4A to M4B](https://www.converterrr.com/m4a-to-m4b) (in the browser)
- [WebM to M4B](https://www.converterrr.com/webm-to-m4b) (in the browser)
- [FLAC to M4B](https://www.converterrr.com/flac-to-m4b) (in the browser)
- [MKV to M4B](https://www.converterrr.com/mkv-to-m4b) (in the browser)
- [AAC to M4B](https://www.converterrr.com/aac-to-m4b) (in the browser)
- [AVI to M4B](https://www.converterrr.com/avi-to-m4b) (in the browser)
- [OGG to M4B](https://www.converterrr.com/ogg-to-m4b) (in the browser)
- [WMV to M4B](https://www.converterrr.com/wmv-to-m4b) (in the browser)
- [Opus to M4B](https://www.converterrr.com/opus-to-m4b) (in the browser)
- [WMA to M4B](https://www.converterrr.com/wma-to-m4b) (in the browser)
- [FLV to M4B](https://www.converterrr.com/flv-to-m4b) (in the browser)
- [M4V to M4B](https://www.converterrr.com/m4v-to-m4b) (in the browser)
- [MPEG to M4B](https://www.converterrr.com/mpeg-to-m4b) (in the browser)
- [3GP to M4B](https://www.converterrr.com/3gp-to-m4b) (in the browser)
- [AIFF to M4B](https://www.converterrr.com/aiff-to-m4b) (in the browser)
- [AMR to M4B](https://www.converterrr.com/amr-to-m4b) (in the browser)
- [MPG to M4B](https://www.converterrr.com/mpg-to-m4b) (in the browser)
- [TS to M4B](https://www.converterrr.com/ts-to-m4b) (in the browser)
- [MTS to M4B](https://www.converterrr.com/mts-to-m4b) (in the browser)
- [VOB to M4B](https://www.converterrr.com/vob-to-m4b) (in the browser)
- [M2TS to M4B](https://www.converterrr.com/m2ts-to-m4b) (in the browser)
- [AC3 to M4B](https://www.converterrr.com/ac3-to-m4b) (in the browser)
- [APE to M4B](https://www.converterrr.com/ape-to-m4b) (in the browser)
- [OGV to M4B](https://www.converterrr.com/ogv-to-m4b) (in the browser)
- [MXF to M4B](https://www.converterrr.com/mxf-to-m4b) (in the browser)
- [DivX to M4B](https://www.converterrr.com/divx-to-m4b) (in the browser)
- [MP2 to M4B](https://www.converterrr.com/mp2-to-m4b) (in the browser)
- [CAF to M4B](https://www.converterrr.com/caf-to-m4b) (in the browser)
- [WEBA to M4B](https://www.converterrr.com/weba-to-m4b) (in the browser)
- [3G2 to M4B](https://www.converterrr.com/3g2-to-m4b) (in the browser)
- [RM to M4B](https://www.converterrr.com/rm-to-m4b) (cloud)
- [RMVB to M4B](https://www.converterrr.com/rmvb-to-m4b) (cloud)
- [OGA to M4B](https://www.converterrr.com/oga-to-m4b) (in the browser)
- [MKA to M4B](https://www.converterrr.com/mka-to-m4b) (in the browser)
- [F4V to M4B](https://www.converterrr.com/f4v-to-m4b) (in the browser)
- [ASF to M4B](https://www.converterrr.com/asf-to-m4b) (in the browser)
- [WV to M4B](https://www.converterrr.com/wv-to-m4b) (in the browser)
- [AU to M4B](https://www.converterrr.com/au-to-m4b) (in the browser)
- [TTA to M4B](https://www.converterrr.com/tta-to-m4b) (in the browser)

## About the M4B format: frequently asked questions

### What is an M4B file?

M4B is an MP4 audio file flagged as an audiobook, supporting chapters and resume position. It's commonly used for audiobooks on Apple Books and other players.

### How do I open an M4B file?

If your app can't open M4B, convert it to a widely supported format like MP3 with the converter above.

### What can I convert M4B to?

18 formats, including MP3, WAV, M4A, FLAC, AAC, OGG.

### What can be converted to M4B?

43 formats can be converted to M4B, including MP3, MP4, WAV, MOV, M4A, WebM.

### What is the MIME type of M4B?

M4B files use the MIME type audio/mp4 and the extension .m4b.