Convert M4B to Android Audio — Free Online Converter

Android can play M4B files natively in some media players (Smart Audiobook Player, Voice Audiobook Player), but the stock Music app and many third-party players do not recognize M4B's chapter markers or bookmarking. Converting M4B to Android-optimized audio means encoding to AAC in an M4A container or MP3, which plays universally across all Android audiobook and music apps. The trade-off is losing M4B's native chapter and bookmark functionality.

Android's built-in media player does not treat M4B specially — it plays the audio but ignores chapters and bookmarks. Dedicated Android audiobook apps (Smart Audiobook Player, Listen Audiobook Player) support M4B natively, but if you prefer a general-purpose music player or want to share audiobook content broadly, converting to M4A or MP3 ensures universal Android compatibility. Splitting by chapter during conversion creates individual tracks that any music player can navigate.