MP3 to FLAC Converter

Need your MP3 as a FLAC file? This free converter wraps .mp3 audio in a lossless FLAC container in seconds — no software or signup. Files up to 30MB are converted directly and nothing is stored after your download.

How to Convert MP3 to FLAC

1. Upload your MP3 file

Drag a file onto the box above, or click to browse.

2. FLAC is selected

FLAC is lossless, so there's no bitrate to choose — the quality setting doesn't apply.

3. Convert & download

Click Convert & Download. Your FLAC file downloads automatically.

The Honest Note: Lossless Container, Not Lossless Quality

This is important. MP3 is lossy — it already threw away audio data. Converting it to FLAC makes a lossless container around that already-lossy audio: a bigger file that sounds exactly like the MP3. It cannot restore quality the MP3 discarded, and it won't sound better than the original MP3. Do this only when a device or workflow specifically needs FLAC as input — not to "upgrade" an MP3. For genuine lossless, start from a lossless source. See is MP3 lossless? and MP3 vs FLAC. Need the reverse? Use FLAC to MP3.

Frequently Asked Questions

How do I convert MP3 to FLAC?

Upload your .mp3 file, keep FLAC selected, then click Convert & Download. The FLAC file is created and downloaded automatically.

Does converting MP3 to FLAC improve quality?

No. It wraps the already-lossy MP3 audio in a lossless container — a bigger file that sounds the same. It can't restore what the MP3 discarded.

Why would I convert MP3 to FLAC?

Only when a device, editor, or workflow specifically requires FLAC input. It avoids format-compatibility issues, but adds no quality.

Is the MP3 to FLAC converter free?

Yes — it's completely free, with no account, no watermarks, and no limit on how many files you convert.