M4B Converter
Convert M4B audios to AC3, ADTS, ADX, AIF and more online. Upload, convert, and download — no software required.
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What is M4B ?
M4B is the audiobook version of M4A: AAC audio in an MPEG-4 file with chapter marks and bookmarking, used by Apple Books and many audiobook apps.
M4B format ▶Why convert M4B files?
M4B is the audiobook format of Apple Books and many audiobook apps: one file with chapters and bookmarks. Car stereos and MP3 players often cannot play it. People convert in both directions:
- An audiobook for any player. M4B to MP3.
- Editing. M4B to WAV.
- A lossless archive copy. M4B to FLAC.
- Making an audiobook. MP3 to M4B and M4A to M4B for Apple Books and audiobook apps.
Copy-protected audiobooks cannot be converted. Chapter marks are not kept in MP3.
Start converting your M4B files now — it's fast, easy, and supports any output format you need.
Convert M4B to other formats
Convert other formats to M4B
- 3G2→M4B
- 3GP→M4B
- 3GPP→M4B
- 4XM→M4B
- AA→M4B
- AAC→M4B
- AAX→M4B
- AC3→M4B
- ACT→M4B
- ADP→M4B
- ADTS→M4B
- ADX→M4B
- AEA→M4B
- AIF→M4B
- AIFC→M4B
- AIFF→M4B
- AMR→M4B
- AMRNB→M4B
- AMRWB→M4B
- AMV→M4B
- APE→M4B
- ASF→M4B
- ASF_O→M4B
- AST→M4B
- AU→M4B
- AV1→M4B
- AVI→M4B
- AVM2→M4B
- AVS→M4B
- BETHSOFTVID→M4B
- BFI→M4B
- BFSTM→M4B
- BINK→M4B
- BMV→M4B
- BRSTM→M4B
- CAF→M4B
- CDXL→M4B
- CINE→M4B
- DAV→M4B
- DIVX→M4B
- DTS→M4B
- DTSHD→M4B
- DV→M4B
- DVD→M4B
- DXA→M4B
- EAC3→M4B
- F4V→M4B
- FLAC→M4B
- FLV→M4B
- G722→M4B
- G729→M4B
- GSM→M4B
- H261→M4B
- H263→M4B
- H264→M4B
- HCA→M4B
- HEVC→M4B
- HNM→M4B
- IDCIN→M4B
- IRCAM→M4B
- IV8→M4B
- IVF→M4B
- IVR→M4B
- KUX→M4B
- M2TS→M4B
- M4A→M4B
- M4R→M4B
- M4V→M4B
- MID→M4B
- MIDI→M4B
- MJPEG→M4B
- MJPEG_2000→M4B
- MKA→M4B
- MKV→M4B
- MOD→M4B
- MOV→M4B
- MP2→M4B
- MP3→M4B
- MP4→M4B
- MPA→M4B
- MPC→M4B
- MPEG→M4B
- MPEGTS→M4B
- MPEGVIDEO→M4B
- MPG→M4B
- MPJPEG→M4B
- MSF→M4B
- MTS→M4B
- MULAW→M4B
- MVI→M4B
- MXF→M4B
- MXF_OPATOM→M4B
- NSV→M4B
- NUT→M4B
- NUV→M4B
- OGA→M4B
- OGG→M4B
- OGV→M4B
- OPUS→M4B
- PSP→M4B
- QCP→M4B
- QT→M4B
- R3D→M4B
- RA→M4B
- RAWVIDEO→M4B
- RKA→M4B
- RL2→M4B
- RM→M4B
- RMVB→M4B
- ROQ→M4B
- SBC→M4B
- SBG→M4B
- SDX→M4B
- SLN→M4B
- SMJPEG→M4B
- SMK→M4B
- SMUSH→M4B
- SPX→M4B
- SVAG→M4B
- SVS→M4B
- SWF→M4B
- TAK→M4B
- THP→M4B
- TIERTEXSEQ→M4B
- TOD→M4B
- TRUEHD→M4B
- TS→M4B
- TTA→M4B
- VAG→M4B
- VIVO→M4B
- VMD→M4B
- VOB→M4B
- VOC→M4B
- VRO→M4B
- W64→M4B
- WAV→M4B
- WAVARC→M4B
- WAVE→M4B
- WEBA→M4B
- WEBM→M4B
- WMA→M4B
- WMV→M4B
- WSD→M4B
- WTV→M4B
- WV→M4B
- XA→M4B
- XMV→M4B
- XVID→M4B
- XWMA→M4B
- YOP→M4B
How to convert M4B files
- Upload your M4B file
Drag & drop your M4B file, click 'Select Files' to upload from your device, or import directly from Dropbox, Google Drive, OneDrive, or paste a URL. - Choose the output format
Pick any supported format you want to convert to. - Adjust settings (optional)
If you like, tweak output options such as resolution, quality, or compression. - Convert the file
Click the 'Convert' button. The conversion takes only a few seconds. - Download your converted file
Download the converted file to your device, or save it directly to Google Drive, Dropbox, or OneDrive.