Online M4B Converter

Convert your M4B files online – Easy, fast and secure.

Step 1 - Select a file(s) to convert
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Step 2 - Convert your files to
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Step 3 - Start converting
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Your file will be uploaded to DigitalOfficePro storage. By using this service, you agree to the DigitalOfficePro Terms of Use.

Easily convert your M4B files to a wide variety of formats online with DigitalOfficePro. Our powerful M4B file converter is fully compatible with all modern browsers, providing a fast and secure way to convert your files without the need for any registration or downloads. The free online tool ensures 256-bit SSL encryption for secure file transfers, and for your peace of mind, all files are automatically deleted after a few hours. With DigitalOfficePro’s web-based application, converting M4B files takes just seconds - no need to install any apps or extensions. Simply upload, convert, and download your files, all online and hassle-free.

M4B, The file with .m4b extension is an audiobook generally used by Apple books and iTunes. The Audio used in this format is stored in MPEG-4 and compressed by using AAC encoding. An M4B file is very similar to M4A but having support the audiobook related features, such as bookmarking and chapter breaks. The M4B files are available in both DRM enabled and DRM free versions. DRM encryted audiobooks are usually paid audiobooks from iTunes Store. Whereas, DRM free can be found easily over the internet.

Free for Everyone

Our online service is absolutely FREE! There are no hidden costs, and you can convert as many files as you like. No need to download or install additional apps or extensions on your computer.

100% Secure

Your content is never stored on our servers. Files are automatically deleted from our servers immediately after the conversion process. We guarantee your file's security and privacy.

High-Speed Conversion

Your files are processed using our powerful conversion servers. In most cases, the conversion takes less time than it would if you used your own computer.

No Limitations

Unlike other services, our platform imposes no limits on the number of files you can convert. Convert as many as you want—no registration or login required.

Quality Output

We use high-quality conversion algorithms to ensure that you won't lose quality during the file conversion process. Your converted output file retains the same quality and effects as the original file.

Support 100+ Formats

We support over 200 file formats, more than any other online converter. From documents and images to videos, audio files, and eBooks, our service has you covered—and we’re continuously adding more formats.

Free M4B File Conversion Tools