MP3 to FLAC Converter
No limits. No uploads. Free.
or drop it here, or press Ctrl+V to paste. Up to 1 GB.
Audio and video run on your device. The engine downloads once (about 30 MB), and longer files take a little while.
About MP3 to FLAC
MP3 audio is already compressed with loss, so converting it cannot restore discarded sound detail. With MP3 to FLAC, fLAC can avoid further audio loss, but does not improve a source that was already compressed lossily.
MP3 to FLAC starts with browser processing for supported input. A MP3 file over 50 MB, or a failed device attempt, can use compatible server processing when capacity is available. That fallback uploads the file and deletes its job after download. The 1 GB selection limit does not guarantee completion.
How to convert MP3 to FLAC
- 1
Select the original MP3 for your FLAC export. MP3 audio is already compressed with loss, so converting it cannot restore discarded sound detail.
- 2
Start MP3 to FLAC with the selected file.
- 3
Save the FLAC result. Compare duration and channels with the source in a FLAC compatible player.
MP3 in MP3 to FLAC
MP3 audio is already compressed with loss, so converting it cannot restore discarded sound detail.
For MP3 to FLAC Converter, start with the actual MP3 file rather than renaming another format.
FLAC in MP3 to FLAC
FLAC can avoid further audio loss, but does not improve a source that was already compressed lossily.
After MP3 to FLAC Converter, Compare duration and channels with the source in a FLAC compatible player.
Common questions
When is MP3 to FLAC useful?
MP3 audio is already compressed with loss, so converting it cannot restore discarded sound detail. FLAC can avoid further audio loss, but does not improve a source that was already compressed lossily.
What should I inspect in the FLAC exported from MP3?
Compare duration and channels with the source in a FLAC compatible player. Keep the MP3 source until you have confirmed the FLAC is suitable.
What can I use MP3 to FLAC for?
MP3 audio is already compressed with loss, so converting it cannot restore discarded sound detail. With MP3 to FLAC, fLAC can avoid further audio loss, but does not improve a source that was already compressed lossily.
Will MP3 to FLAC improve the original quality?
No. Conversion cannot restore missing sound or picture detail. Reencoding can introduce additional loss, even if the output is larger. For MP3 to FLAC, Compare duration and channels with the source in a FLAC compatible player.
Why might my FLAC file not play in every app?
Support depends on both the container and codecs. Test the downloaded result in the player or editor you intend to use. For MP3 to FLAC, Compare duration and channels with the source in a FLAC compatible player.
Why can the first MP3 to FLAC attempt take longer?
The browser downloads the audio and video engine at first use. Later attempts can reuse it, but long clips and slower devices still need processing time. For MP3 to FLAC, Compare duration and channels with the source in a FLAC compatible player.
Does MP3 to FLAC upload my file for processing?
The first MP3 to FLAC attempt uses your browser for supported input. A compatible MP3 file over 50 MB, or an attempt your device cannot finish, may be sent for server processing if capacity exists. In that case the file is uploaded and the conversion job is deleted after download.