Free Online M4B to WAV Converter
Convert M4B audio to WAV online for free.
Drop M4B files hereChoose M4B files
Up to 50 MB per file. Sign up free to convert files up to 100 MB.
Selected files
| File name | Size | Convert to |
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Pick a format to convert to.
Preparing files
Checking files and selected output formats.
When WAV is the right output
WAV is uncompressed lossless audio: pristine but large (~10 MB per minute at CD quality). Convert to WAV when your destination is audio production (DAWs like Logic, Ableton, Pro Tools all use WAV natively), voice-over delivery, or when a broadcaster / stock-audio marketplace specifies uncompressed. Never for casual listening: file sizes make no sense.
Frequently asked questions
How do I convert M4B to WAV?
Upload the M4B file and choose an output format. The audio is re-encoded to WAV and the track metadata is kept. No account is required, and whole albums or playlists can be uploaded together.
How to convert M4B to WAV without losing sound quality
WAV is an uncompressed lossless audio format. Converting to a lossless target (WAV, FLAC, AIFF) preserves every detail of the original. Converting between lossy formats involves a small, usually inaudible re-encoding step. For the best result, always start from the highest-quality source file you have.
Can I convert multiple M4B files to WAV at once?
Yes. Upload a whole album or playlist of M4B files and they are all converted to WAV. Metadata (title, artist, album, cover art) carries over for each track, so your library stays organised after conversion. Batch uploads need a paid plan, Pro takes 20 files at a time and Business 100, while the free plan converts one file at a time.
Does M4B to WAV conversion keep track info like artist and album?
Yes. ID3 metadata such as title, artist, album, and cover art carries over automatically wherever the WAV format supports it, so your library stays organised after conversion.
How do I open M4B files?
On Windows: iTunes, or any audiobook player that keeps chapter marks. On a Mac: Apple Books, natively. An audiobook container. It plays in most audio apps, but only audiobook-aware players keep the chapters and remember your position.