Convert M4B audiobooks to MP3, AAC, or FLAC — chapters perfectly preserved. Your M4B audiobooks are stuck. They play in one app, on specific devices, and the moment you switch players you lose your chapters and progress.

Audiobook Converter Pro converts your M4B files to MP3, AAC, or FLAC — with every chapter perfectly preserved. Switch to any device, any app, any player. Your entire library, finally portable. If a book has no embedded chapter markers, Audiobook Converter Pro can also infer chapter breaks from silence during interactive conversion, giving markerless audiobooks a reliable split-by-chapters path instead of forcing everything into one long file.

Pro features unlock batch conversion, parallel processing, recursive folder scanning, Watch Folder automation, and flexible naming templates like {Album}/{TrackPadded}-{ChapterTitle} to organise your library exactly how you want it.