M4B to FLAC Converter

Convert M4B to FLAC online quickly and easily. Just upload your file, convert it, and download the FLAC in seconds.

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What is M4B ?

M4B is the audiobook version of M4A: AAC audio in an MPEG-4 file with chapter marks and bookmarking, used by Apple Books and many audiobook apps.

M4B format  ▶

What is FLAC ?

FLAC (Free Lossless Audio Codec) is an audio format that compresses audio files without any loss of quality. It is widely used for storing high-fidelity music and is favored by audiophiles for its lossless nature, allowing for perfect reproduction of the original audio signal.

FLAC format  ▶

How to convert M4B to FLAC

  1. Upload your M4B file
    Drag and drop your M4B file, click 'Select Files' to upload from your device, or import directly from Dropbox, Google Drive, OneDrive, or paste a URL.
  2. Choose FLAC as output format
    The converter is preset to FLAC, but you can select any other output format before converting.
  3. Adjust settings (optional)
    If you like, tweak output options such as resolution, quality, or compression before converting.
  4. Convert the file
    Click the 'Convert' button. The conversion takes only a few seconds.
  5. Download your converted file
    Download the converted file to your device, or save it directly to Google Drive, Dropbox, or OneDrive.