MP3 to FLAC Converter

1. Upload your MP3 file (up to 50 MB).
2. Click 'Convert MP3 to FLAC' — takes 5-15 seconds.
3. Download the FLAC file.

MP3 to FLAC conversion doesn't restore lost quality — MP3 is lossy. But FLAC is a better archival container: it preserves the MP3 data exactly and is immune to further generational loss.

FLAC is a lossless format — it preserves audio exactly, with no generational loss. Converting MP3 to FLAC doesn't restore quality lost during MP3 encoding, but it does give you a lossless container that can be safely re-edited, re-encoded, or archived without further quality loss. Useful for audio production workflows and long-term archives.

The converter decodes the MP3 audio and re-encodes it as FLAC losslessly. The FLAC file contains the exact same audio samples as the MP3 decoder produces — no quality is lost, and no quality is added. FLAC files are typically 2-3x larger than MP3.

• Archiving MP3 collections in a lossless container.
• Converting MP3 for audio production workflows.
• Making MP3 files compatible with FLAC-only software.
• Preparing MP3 for re-editing without further loss.
• Standardizing an audio library to FLAC.
• Future-proofing an MP3 archive.
• Converting MP3 to FLAC for audiophile playback software.

MP3 → FLAC is lossless in terms of preserving what the MP3 contains. It cannot restore quality lost during the original MP3 encoding. The FLAC file will sound identical to the MP3.

• Cannot restore quality lost during MP3 encoding.
• FLAC files are 2-3x larger than the MP3 source.
• No quality improvement — FLAC is just a better container.
• For archival, keep the MP3 if size matters.
• For true lossless, start from WAV or FLAC source.

• Output FLAC plays on most modern devices and software.
• Works with VLC, Foobar2000, iTunes (with plugin), phones (some).
• Vorbis comments preserved.
• Standard FLAC — no special software needed for supported devices.
• Accepted by most audio software and platforms.

• MP3 → FLAC doesn't improve quality — it just changes the container.
• FLAC files are 2-3x larger than the MP3 source.
• For true lossless, always start from WAV or FLAC source.
• Metadata (ID3) is translated to Vorbis comments.
• Keep the MP3 if file size matters.

Audio quality didn't improve

MP3 is lossy — lost quality can't be restored. FLAC preserves what's there, no more.

File size increased significantly

FLAC is lossless — files are 2-3x larger than MP3. This is expected.

Metadata is missing or malformed

ID3 tags are translated to Vorbis comments. Some fields may not map perfectly.

• Xiph.Org — FLAC
• Fraunhofer IIS — MP3