M4B Converter

Convert audio files to M4B format online for free. Fast, secure, and completely private.

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About M4B

M4B

MPEG-4 Audiobook

M4B is an audiobook format based on MPEG-4. It supports chapters, bookmarks, and is the standard format for iTunes and Audible audiobooks.

Extension
.m4b
Developed By
Apple Inc.
Released
2001
Compression
Lossy

Typical Use Cases

AudiobooksPodcasts with chaptersLong-form audio content

Pros

  • • Chapter support
  • • Bookmark support
  • • Good compression

Cons

  • • Limited to Apple ecosystem
  • • Not universal
  • • Requires specific players

Convert from M4B

M4B → MP3M4B → M4AM4B → WAVM4B → OGGM4B → FLACM4B → AACM4B → M4RM4B → AIFFM4B → OPUSM4B → AIFM4B → AC3M4B → AMRM4B → AUM4B → CAFM4B → OGAM4B → VOCM4B → WEBA

Convert to M4B

MP3 → M4BM4A → M4BWAV → M4BOGG → M4BFLAC → M4BAAC → M4BM4R → M4BAIFF → M4BOPUS → M4BAIF → M4BAC3 → M4BAMR → M4BAU → M4BCAF → M4BOGA → M4BVOC → M4BWEBA → M4B