Convert M4B to AIFF Online — Free
Fast, free M4B to AIFF converter. No registration required.
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How to Convert
Upload your .m4b file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .aiff file when it's ready.
What is M4B?
M4B is the MPEG-4 audiobook format used by Apple iTunes and many audiobook platforms. It supports chapter markers, bookmarking, and AAC compression for efficient audiobook delivery.
Format Details
- Full Name
- MPEG-4 Audiobook
- Extension
- .m4b
Key Features
- Chapter support
- Bookmark resume
- iTunes compatible
- AAC compression
What is AIFF?
AIFF is an uncompressed audio format developed by Apple. Like WAV, it provides perfect audio quality but results in large file sizes.
Format Details
- Full Name
- Audio Interchange File Format
- Extension
- .aiff
Key Features
- Lossless quality
- Apple standard
- Professional audio
- No compression
M4B vs AIFF
| Feature | M4B | AIFF |
|---|---|---|
| Full Name | MPEG-4 Audiobook | Audio Interchange File Format |
| Extension | .m4b | .aiff |
| Best For | Chapter support | Lossless quality |