MP3 to FLAC

Convert MP3 files to FLAC for free. No size limit, no sign-up, nothing uploaded.

How to convert MP3 to FLAC

  1. Choose your MP3 files or drop them on this page. You can add as many as you like.
  2. FLAC is already selected. Press Convert, or Convert all for several files.
  3. Press Download. With several files you can download them all as one ZIP.

MP3 is the most common music format, small and playable everywhere. FLAC is lossless audio: full CD quality in a smaller file.

Questions

Is converting MP3 to FLAC free?
Yes. ConvertBoy is free with no daily limit, no watermark and no sign-up.
Is there a file size limit?
No. Your own device does the work, so the only limit is your device's memory. Very large videos take longer on slower computers.
Are my files uploaded anywhere?
No. The conversion happens inside your browser. Your MP3 files never leave your device, and nothing is kept after you close the tab.
Does it work on a phone?
Yes. It works in Safari on iPhone and Chrome on Android, as well as on any computer.
How long does it take?
A song takes a few seconds. A video takes roughly as long as it plays on an average laptop, less on a fast one. The first time, the converter loads its video engine (about 30 MB).

Convert MP3 to another format

Convert other files to FLAC