MP3 to FLAC Converter

Convert MP3 files to FLAC format. While this won't restore lost audio data from MP3 compression, it gives you a FLAC container compatible with high-fidelity audio systems and players.

MP3FLAC

Drop your MP3 file here or click to browse

MP3 (.mp3) · Max 20 MB

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What is MP3?

The most widely used audio format. Great compatibility, small file size. Ideal for music, podcasts, and general use.

What is FLAC?

Lossless compression. Perfect quality at roughly half the size of WAV. The choice for audiophiles and archiving.

Why Convert MP3 to FLAC?

Converting MP3 to FLAC doesn't make the audio lossless — that data is gone — but it does give you a FLAC container. There are specific cases where this matters. Some high-end audio players (Naim, Lumin, Roon) refuse to play MP3 but accept FLAC natively. Some archival systems and music libraries require FLAC for import. If you're managing a digital music library in Plex, Jellyfin, or Roon, having everything in a consistent FLAC format simplifies metadata management and ensures the software doesn't baulk at mixed formats. The resulting FLAC is technically "lossless compression of lossy audio" — the FLAC codec compresses the PCM output of the MP3 decoder without further quality loss. File size will be larger than the MP3 but smaller than the equivalent WAV. For anything quality-critical, start from a lossless source. For format compatibility, MP3→FLAC works fine.

Who Uses This Converter

Hi-fi & network streamers

Naim, Bluesound, Lumin, and many high-end audio players prefer FLAC over MP3. Convert your MP3 library to FLAC for native playback without transcoding.

Roon & Plex libraries

Roon and Plex handle mixed-format libraries, but a consistent FLAC library simplifies metadata matching, artwork fetching, and audio analysis.

Archival workflows

Some content management systems and digital archives require lossless formats for ingest. MP3 to FLAC satisfies the format requirement without discarding the audio.

Format consistency

Managing a music collection in a single format reduces player compatibility headaches. If your collection is FLAC-first, wrapping legacy MP3s keeps the library uniform.

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.

Will the FLAC play on my hi-fi streamer or DAC?

Most modern network players and DACs (Naim, Cambridge Audio, Bluesound, Roon) natively support FLAC. If your device rejects MP3 but accepts FLAC, this conversion solves it. The audio quality will be identical to the source MP3 — FLAC is just the delivery container.