How do I convert MP3 to FLAC?

Upload your MP3 file using the box above, confirm FLAC as the output format, then select Convert. The converted file is ready to download as soon as processing finishes — usually in a few seconds.

Is converting MP3 to FLAC free?

Yes, and there is nothing to sign up for. Every conversion is free, there is no paid tier, and the limits are the same for everyone.

Will the quality change when converting to FLAC?

Converting to FLAC is lossless, but it cannot restore detail that the original MP3 file already discarded. The result matches the source exactly as it is.

What happens to my file afterwards?

The uploaded file is deleted as soon as the conversion completes, and the converted file is removed automatically once its retention window ends. Download links are signed and expire within minutes.

mp3flac

Convert MP3 to FLAC

Free online converter for MP3 files. Lossless compression with roughly half the size of WAV. Nothing to install, no watermark, and every file is deleted automatically.

Drag and drop your files

Upload a MP3 file to convert it to FLAC. Up to 200 files at once, 10 GB each.

Free · up to 200 files · 10 GB each · files deleted automatically after 168 hours.

About MP3 and FLAC

MP3

The most widely compatible lossy audio format.

audio/mpeg

FLAC

Lossless compression with roughly half the size of WAV.

audio/flac

Other MP3 conversions

mp3 to wav
mp3 to ogg
mp3 to opus
mp3 to aac
mp3 to m4a

Other ways to get FLAC

wav to flac
ogg to flac
opus to flac
aac to flac
m4a to flac
mp4 to flac
webm to flac
mkv to flac