M4B to 3GP Converter
Turn M4B audio into a genuine 3GP video with a clean background for playback, editing, presentations, and sharing.
Drop your M4B files here
Up to 500MB per file.
Files are encrypted and auto-deleted after conversion
How to Convert
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Upload your M4B files
Drag and drop or select M4B files from your device. You can upload multiple files at once.
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Configure Output
Choose an audio quality setting to balance sound quality and file size.
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Download 3GP files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert M4B to 3GP?
M4B is an MPEG-4 audiobook format used by Apple Books and compatible spoken-word listening applications. Converting it to 3GP creates a compact mobile video format used by phones, messaging systems, and lightweight playback applications, ready for workflows that use the destination format.
3GP plays in compatible phones, VLC, messaging applications, and mobile-focused media software.
Frequently Asked Questions
How do I convert M4B to 3GP?
Add your M4B audio, choose your preferred quality, start the conversion, and download a genuine 3GP video with a clean background.
Which M4B files can I convert?
This converter works with Apple Books audiobooks, spoken-word recordings, audiobook libraries, and compatible M4B files. Each supported recording becomes a ready-to-use 3GP file.
What appears in the 3GP video?
Your M4B soundtrack is paired with a clean 1280 by 720 background, creating a genuine 3GP video that keeps the complete audio track.
Where can I use the converted 3GP video?
3GP plays in compatible phones, VLC, messaging applications, and mobile-focused media software.
Can I convert several M4B files together?
Yes. Add multiple M4B files, convert them in one batch, and download each completed 3GP result separately.
Is M4B to 3GP free and secure?
Yes. Files are transferred over an encrypted connection, processed securely, and automatically deleted shortly after conversion. No account is required.