Free MP3 to FLAC Converter
A MP3 to FLAC converter that actually works. No bundled malware. No shady installs. Open your browser and convert.
Drop your MP3 file here or click to browse
MP3 (.mp3) · Max 20 MB
Desktop converters require downloads. Online converters upload your files to unknown servers. AudioUtils does neither. It runs WebAssembly in your browser tab.
The conversion is fast. A typical 5-minute audio file converts in under 3 seconds. No progress bars that stall at 99%.
MP3 is lossy. Converting to FLAC won't restore lost data, but gives you an uncompressed container for editing workflows. Works on Chrome, Firefox, Safari, and Edge. Any device, any OS.
Frequently Asked Questions
Does converting MP3 to FLAC make it lossless?
No. The audio quality remains identical to the source MP3. FLAC is the container format, but the audio data inside was already compressed with loss. For true lossless quality, start with an uncompressed source like CD audio or WAV.
Will the FLAC file be larger than the MP3?
Yes, somewhat. FLAC wraps the decoded audio in lossless compression, so the file will be larger than the MP3 but smaller than the equivalent WAV.
When does MP3 to FLAC conversion make sense?
When you need FLAC format for compatibility reasons — certain audio players, home theater systems, or archival workflows that require FLAC input.
What's the best source for FLAC files?
Rip from CDs, buy from services like Bandcamp or Qobuz, or convert from WAV/AIFF masters. Starting with a lossless source ensures true FLAC quality.
About MP3
The most widely used audio format. Great compatibility, small file size. Ideal for music, podcasts, and general use.
About FLAC
Lossless compression. Perfect quality at roughly half the size of WAV. The choice for audiophiles and archiving.