Convert M4B to MP4 online, for free.
We use both open source and custom software to make sure our conversions are of the highest quality. In most cases, you can fine-tune conversion parameters using “Advanced Settings” (optional, look for the icon).
Our M4B to MP4 Converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically deleted after 2 hours.
FreeConvert.com can convert your M4B files to these other formats:
FreeConvert.com can convert your other files to MP4 format: