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MP3 to FLAC Converter - Lossless Container

Convert MP3 to FLAC container for compatibility with lossless audio workflows. Note: cannot restore lost quality. Browser-based, private.

Note: Converting MP3 to FLAC does not improve audio quality. The original MP3 compression already discarded audio data permanently.

Select Audio File

Drop MP3 file here or click to browse

Supports MP3 audio files

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FLAC will preserve the MP3 audio exactly as-is in a lossless container. File size will increase.

Conversion Complete

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Original MP3
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FLAC Size
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Size Change

Understanding MP3 to FLAC

  • Cannot restore lost audio quality
  • Creates lossless container only
  • File size will increase
  • Useful for format compatibility
  • Prevents further quality loss

Valid Use Cases

  • Format compatibility - FLAC-only players
  • Audio editing - Prevent re-encoding loss
  • Library standardization - Single format
  • Workflow requirements - Lossless chain

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All processing happens in your browser. Files never leave your device.

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