Convert MP3 to FLAC
Turn an MP3 into a FLAC for a tidy, tag-friendly library. FLAC is compressed but lossless, so it holds the exact audio decoded from your MP3, and the whole conversion stays in your browser.
Why convert MP3 to FLAC?
People convert to FLAC to standardize a music library on one lossless container that supports rich tags and cover art. It is the favorite for archiving and hi-fi setups, and it plays in foobar2000, VLC, and most modern Android phones and network streamers. Because FLAC compresses, it stores the exact same samples as WAV at roughly 50 to 60 percent of the size, which is friendlier for large collections. Just note that some car head units and certain Apple apps still lack native FLAC playback, so keep the MP3 around for those.
Quality and file size
Here is the honest part: your MP3 is already lossy, and FLAC cannot rebuild the detail the MP3 encoder threw away. What it does give you is a lossless, exact copy of the audio sitting in the MP3 right now, with no further quality change from this step. Expect the FLAC to be larger than the source MP3, because lossless compression cannot shrink audio the way MP3 does, though it stays well under a WAV of the same material while carrying proper metadata. Treat this as a clean, well-tagged archive of the file you have, not a way to make a low-bitrate MP3 sound like a master.
MP3 to FLAC: common questions
Will FLAC make my MP3 sound better?
No. FLAC is lossless, but it can only preserve what the MP3 already contains. The data the MP3 encoder discarded is gone and cannot be recovered by converting.
Will the FLAC be smaller than my MP3?
No, it will usually be larger, since MP3 is a lossy format built for small files. Compared to WAV, though, the FLAC holds the same audio at roughly 50 to 60 percent of the size.
Is anything uploaded when I convert?
No. Everything runs in your browser via FFmpeg compiled to WebAssembly. The file never leaves your device, and we do not see, store, or train on it.
Does FLAC keep tags and cover art?
Yes. FLAC supports rich metadata and embedded artwork, which is one reason it is popular for archiving and hi-fi libraries in players like foobar2000 and VLC.
Who makes this?
We're the small team behind Xport Studio, a private, fully offline app for AI vocals, stems, and mastering. These free tools are side experiments we wanted to share. No upsell, but if you're curious about the bigger thing, take a look.