Tools / File Converter / M4B to WAV Converter

M4B to WAV Converter

Convert M4B files to WAV. Free, without uploading.

This tool converts M4B files to WAV. Audiobook (AAC).

WAV is uncompressed audio: no quality loss, but large files. Editing and recording software use it a lot. WAV is lossless, so the audio keeps the quality it has in the M4B file.

Conversion runs on your device; your file is never sent to a server. The components download once on first use, and later conversions start right away.

How to use

1. Choose the M4B file, drag it in, or paste its link.
2. Choose the audio quality; optionally enter a start and end time.
3. Press "Convert" and download the WAV file.

Frequently asked questions

Will audio quality drop when converting to WAV?

No. WAV is lossless.

Is there a file size limit?

No fixed limit; your device’s memory decides. Computers usually handle files up to 1–2 GB.

Is my file uploaded?

No. Your M4B file is converted to WAV inside your browser.