# Convert M4B to WAV

> Convert M4B to WAV online for free. Runs entirely in your browser, so your files never leave your device. Fast batch conversion, no sign-up, no watermarks.

URL: https://www.converterrr.com/m4b-to-wav

- Runs in the browser with WebCodecs: files are not uploaded, and no credits are used.
- Engines: WebCodecs (browser), FFmpeg (WASM) (browser), FFmpeg (cloud).
- API: available. `POST /api/v1/jobs` with `"output_format": "wav"` (paid plans).
- More: [Audio converter](https://www.converterrr.com/audio-converter), [M4B converter](https://www.converterrr.com/m4b-converter).

## How to convert M4B to WAV

1. **Add your M4B files.** Drag and drop M4B files onto the converter, paste them, or click to browse. You can add several at once.
2. **Choose WAV.** WAV is already selected. Open Options if you want to change quality, size or metadata.
3. **Convert.** Click Convert. Your files are converted right in your browser in seconds.
4. **Download your WAV.** Download each WAV file, or everything at once as a ZIP.

## Good to know

- Converting to WAV won't restore detail that M4B compression already removed, but it prevents any further quality loss when you edit and re-save.
- M4B files are typically used for audiobooks on Apple Books and other players, while WAV is best for recording, editing and mastering audio.
- This conversion runs on WebCodecs, running locally in your browser — nothing is uploaded and it works even on slow connections.

## M4B vs WAV

|  | M4B | WAV |
| --- | --- | --- |
| Full name | MPEG-4 Audiobook | Waveform Audio |
| Type | Audio | Audio |
| Extensions | .m4b | .wav |
| MIME type | audio/mp4 | audio/wav |
| Best for | audiobooks on Apple Books and other players | recording, editing and mastering audio |
| Properties | lossy compression | lossless |

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

**WAV:** WAV stores uncompressed PCM audio. It's lossless and universally editable but takes about ten times the space of an MP3.

The other way around: [convert WAV to M4B](https://www.converterrr.com/wav-to-m4b).

## Related conversions

- [WAV to M4B](https://www.converterrr.com/wav-to-m4b) (in the browser)
- [M4B to MP3](https://www.converterrr.com/m4b-to-mp3) (in the browser)
- [MP3 to WAV](https://www.converterrr.com/mp3-to-wav) (in the browser)
- [MP4 to WAV](https://www.converterrr.com/mp4-to-wav) (in the browser)
- [M4B to M4A](https://www.converterrr.com/m4b-to-m4a) (in the browser)
- [MOV to WAV](https://www.converterrr.com/mov-to-wav) (in the browser)
- [M4B to FLAC](https://www.converterrr.com/m4b-to-flac) (in the browser)
- [M4A to WAV](https://www.converterrr.com/m4a-to-wav) (in the browser)
- [M4B to AAC](https://www.converterrr.com/m4b-to-aac) (in the browser)
- [WebM to WAV](https://www.converterrr.com/webm-to-wav) (in the browser)
- [M4B to OGG](https://www.converterrr.com/m4b-to-ogg) (in the browser)
- [FLAC to WAV](https://www.converterrr.com/flac-to-wav) (in the browser)

## Convert M4B to other formats

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

## Convert other formats to WAV

[MP3 to WAV](https://www.converterrr.com/mp3-to-wav), [MP4 to WAV](https://www.converterrr.com/mp4-to-wav), [MOV to WAV](https://www.converterrr.com/mov-to-wav), [M4A to WAV](https://www.converterrr.com/m4a-to-wav), [WebM to WAV](https://www.converterrr.com/webm-to-wav), [FLAC to WAV](https://www.converterrr.com/flac-to-wav), [MKV to WAV](https://www.converterrr.com/mkv-to-wav), [AAC to WAV](https://www.converterrr.com/aac-to-wav), [AVI to WAV](https://www.converterrr.com/avi-to-wav), [OGG to WAV](https://www.converterrr.com/ogg-to-wav), [WMV to WAV](https://www.converterrr.com/wmv-to-wav), [Opus to WAV](https://www.converterrr.com/opus-to-wav), [WMA to WAV](https://www.converterrr.com/wma-to-wav), [M4V to WAV](https://www.converterrr.com/m4v-to-wav), [3GP to WAV](https://www.converterrr.com/3gp-to-wav), [FLV to WAV](https://www.converterrr.com/flv-to-wav), [MPEG to WAV](https://www.converterrr.com/mpeg-to-wav), [AIFF to WAV](https://www.converterrr.com/aiff-to-wav), [AMR to WAV](https://www.converterrr.com/amr-to-wav), [TS to WAV](https://www.converterrr.com/ts-to-wav), [MPG to WAV](https://www.converterrr.com/mpg-to-wav), [MTS to WAV](https://www.converterrr.com/mts-to-wav), [VOB to WAV](https://www.converterrr.com/vob-to-wav), [M2TS to WAV](https://www.converterrr.com/m2ts-to-wav)

## M4B to WAV: frequently asked questions

### How do I convert M4B to WAV?

Drop your M4B file onto the converter above, make sure WAV is selected, and click Convert. When it's done, download the WAV file — it usually takes a few seconds.

### Is it safe to convert M4B to WAV here?

Yes. M4B to WAV conversion happens entirely inside your browser using WebAssembly, so your file is never uploaded to any server.

### Is the M4B to WAV converter free?

Yes — free with no watermark. Signed-out visitors can convert 25 files a day, and a free account raises that to 250.

### Will converting M4B to WAV reduce quality?

No — WAV preserves the content of your M4B file as faithfully as the format allows.

### Can I convert multiple M4B files at once?

Yes. Add up to 5 files at a time without an account, 10 with a free account and up to 500 on paid plans, then download them individually or as a single ZIP.

### Can I convert WAV back to M4B?

Yes — use our WAV to M4B converter. Note that converting back and forth between formats can't recover detail lost to lossy compression.