M4B to AIFF Converter
Convert M4B audio to genuine AIFF for listening, editing, compatible media apps, and organised audio libraries. Download free.
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 AIFF files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert M4B to AIFF?
M4B is an MPEG-4 audiobook format used by Apple Books and compatible spoken-word listening applications. Converting it to AIFF creates an uncompressed audio format common in Apple and professional production workflows, ready for workflows that use the destination format.
AIFF opens in major audio editors and Apple media software, with support in many cross-platform players.
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Frequently Asked Questions
How do I convert M4B to AIFF?
Add your M4B audio, start the conversion, and download the completed AIFF file.
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 AIFF file.
What kind of AIFF file is created?
The result is genuine AIFF audio suited to audiobook chapters, spoken-word recordings, lectures, and listening libraries, compatible playback, editing, and organised media libraries.
Where can I use the converted AIFF audio?
AIFF opens in major audio editors and Apple media software, with support in many cross-platform players.
Can I convert several M4B files together?
Yes. Add multiple M4B files, convert them in one batch, and download each completed AIFF result separately.
Is M4B to AIFF free and secure?
Yes. Files are transferred over an encrypted connection, processed securely, and automatically deleted shortly after conversion. No account is required.