Convert FLAC to M4B Online — Free
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How to Convert
Upload your .flac 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 .m4b file when it's ready.
What is FLAC?
FLAC is an open-source lossless audio codec. It compresses audio without any quality loss, making it popular among audiophiles.
Format Details
- Full Name
- Free Lossless Audio Codec
- Extension
- .flac
Key Features
- Lossless compression
- Open source
- Audiophile quality
- Metadata support
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
FLAC vs M4B
| Feature | FLAC | M4B |
|---|---|---|
| Full Name | Free Lossless Audio Codec | MPEG-4 Audiobook |
| Extension | .flac | .m4b |
| Best For | Lossless compression | Chapter support |