BrentList logo BrentList
Free · no signup

How do I convert MP3 to FLAC?

Some music libraries, players, or archives are organized around FLAC and expect that format for consistency. Converting an MP3 to FLAC fits it into that setup, as long as you understand it will not sound any better than the original MP3.

Your FLAC is ready Download FLAC

Upload your MP3 file and choose FLAC as the output, then download it. FLAC is lossless, but converting an MP3 cannot add back quality the MP3 already discarded. The result is a lossless copy of a lossy source: larger than the MP3 with no improvement in how it actually sounds.

How it works

1

Upload your MP3 file

Select or drag in the MP3 you want to convert to FLAC.

2

Choose FLAC as the output

Set FLAC as the target to wrap the audio in a lossless container.

3

Download your FLAC

Save the FLAC file to fit it into a library or player that expects the format.

Frequently asked questions

No. MP3 is lossy, so detail it removed during compression is gone for good. FLAC is lossless, but wrapping an MP3 in FLAC only preserves the MP3's existing quality, it cannot restore anything.
Yes, usually much larger. FLAC losslessly stores whatever it is given, so a FLAC made from an MP3 takes far more space than the MP3 while sounding identical to it.
Mainly for consistency. If your library, player, or hardware expects FLAC, converting makes the file fit, even though there is no audio quality gain over the source MP3.
It is lossless relative to the MP3, not to the original recording. FLAC perfectly preserves the MP3 you fed it, but that MP3 was already lossy, so the FLAC inherits its limits.
No. The conversion runs online with no signup and no software to install, and your file is deleted after processing.

Related tools

WAV to FLAC
FLAC to MP3
Audio converter