MP3 to FLAC Converter
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Convert MP3 to FLAC online
Use this MP3 to FLAC converter to turn MP3 files into FLAC right in your browser — ideal for lossless music, audiophile libraries and archiving audio. MP3 uses lossy compression and FLAC uses lossless compression, so file size and quality can change.
When should you convert MP3 to FLAC?
- When you need it for lossless music
- When you need it for audiophile libraries
- To open your files in apps that prefer FLAC
- To share FLAC files more easily
What happens to your file
The MP3 audio is decoded and re-encoded to FLAC with FLAC at lossless compression. There is no video stream involved, so the job is quick even for long recordings.
Settings this conversion runs with
| Engine | ffmpeg |
|---|---|
| Output codec | FLAC |
| Setting | lossless compression |
| Compression | Lossless |
What changes
- FLAC is lossless, but it can only preserve what is already in the MP3 file. Detail removed when the MP3 was first encoded does not come back — you get a bigger file of the same audio, not a better one.
- Cover art, lyrics, and most tags are not carried across — the output keeps the audio, not the metadata around it.
About MP3 and FLAC files
MP3 audio
Strengths
- plays on everything
- small files
- the audio standard
Limitations
- lossy quality
- no surround sound
FLAC audio
Strengths
- lossless quality
- smaller than WAV
- great for archiving
Limitations
- larger than MP3
- not supported everywhere
MP3 vs FLAC
| Format | MP3 | FLAC |
|---|---|---|
| Compression | Lossy | Lossless |
| Transparency | — | — |
| Best for | music and podcasts, extracted audio | lossless music, audiophile libraries |
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Frequently asked questions
- Does converting MP3 to FLAC re-encode the file?
- The MP3 audio is decoded and re-encoded to FLAC with FLAC at lossless compression. There is no video stream involved, so the job is quick even for long recordings.
- What should you know before converting MP3 to FLAC?
- FLAC is lossless, but it can only preserve what is already in the MP3 file. Detail removed when the MP3 was first encoded does not come back — you get a bigger file of the same audio, not a better one.
- Is this MP3 to FLAC converter free?
- Yes. You can convert MP3 to FLAC online for free, with no account and no watermark.
- Do I need to install software or sign up?
- No. Use the converter from your browser without installing software or creating an account. Files are uploaded to our servers for processing.
- Are my files safe?
- Yes. Files are processed only to complete the conversion and are auto-deleted after 2 hours. We never share them.
- Can I convert multiple MP3 files at once?
- Yes. Drop several files to convert them in a batch and download the results as a single ZIP.