M4B Converter
An M4A that Apple Books and most audiobook apps treat as a book: they remember where you stopped and can play it faster.
Drop an M4B file here
As many as you like. We will show you what they convert to.
Convert from M4B
Convert to M4B
- mp4 to m4b
- webm to m4b
- mkv to m4b
- mov to m4b
- avi to m4b
- wmv to m4b
- flv to m4b
- mpeg to m4b
- ts to m4b
- 3gp to m4b
- ogv to m4b
- vob to m4b
- mxf to m4b
- dv to m4b
- rm to m4b
- swf to m4b
- wtv to m4b
- mp3 to m4b
- aac to m4b
- m4a to m4b
- wav to m4b
- flac to m4b
- ogg to m4b
- opus to m4b
- wma to m4b
- ac3 to m4b
- mka to m4b
- caf to m4b
- aiff to m4b
- m4r to m4b
- amr to m4b
- au to m4b
- voc to m4b
- weba to m4b
- dss to m4b
About M4B files
What can I convert a M4B file to?
MP3, AAC, M4A, WAV, FLAC, OGG, OPUS, WMA, AC3, MKA, CAF, AIFF, M4R, AU, VOC, and WEBA — 16 formats in all.
What can I turn into a M4B?
MP4, WEBM, MKV, MOV, AVI, WMV, FLV, MPEG, TS, 3GP, OGV, VOB, MXF, DV, RM, SWF, WTV, MP3, AAC, M4A, WAV, FLAC, OGG, OPUS, WMA, AC3, MKA, CAF, AIFF, M4R, AMR, AU, VOC, WEBA, and DSS — 35 formats convert into M4B.
Is M4B lossy?
Yes. Writing an M4B discards detail to make the file smaller, and no later conversion can put it back.