Convert MP3 to FLAC online
Convert your MP3 files to FLAC for free, online, no signup or installation.
Accepted source formats
Available output formats
How it works
Upload
Drag and drop or select your MP3 file from your device
Convert
Click "Convert" and wait a few seconds
Download
Get your converted FLAC file instantly
Common mistakes
- Using a source file of poor quality.
- Publishing without checking the final result.
- Confusing file size, dimensions and quality.
- Overwriting the original file without keeping a copy.
Pro tips
- Always keep an original version.
- Test several settings before downloading.
- Use WebP for the web when possible.
- Choose descriptive file names for SEO.
Privacy guaranteed
Your files are processed locally in your browser and are never uploaded to our servers.
MP3 to FLAC: what the conversion does not do
Converting MP3 to FLAC does not restore audio quality lost to MP3 compression: missing detail stays missing. The resulting FLAC will take more space with no perceptible improvement. This conversion is reserved for specific use cases: stable archiving, audio editing without further loss.
Why convert then?
The main reason is to lock a track in a lossless format before editing: trimming, mixing, or successive processing no longer degrades quality further. FLAC is also often required by mastering platforms or professional music distribution services.
Weight multiplied by 4 to 6
A 320 kbps MP3 of 8 MB becomes a 30–45 MB FLAC. The size increase is significant: do this only if the lossless format is actually needed for the downstream workflow.
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