FLAC keeps everything. MP3 goes everywhere.
Drop your FLAC files, choose the bitrate your player or car stereo wants, and download MP3s — converted locally by an encoder running inside the browser, with the tags carried across.
Free · no account · runs in your browser — nothing is uploaded; your audio never leaves your device.
Constant bitrate (CBR) holds the same data rate all the way through — that is what car stereos and older players expect. Variable (VBR) spends more bits on busy passages and fewer on quiet ones, so it usually sounds slightly better at a similar size.
MP3 is lossy, so the download at the bitrate above is a copy for playback, not a master — keep your FLAC. The conversion runs here in the tab: your audio is never uploaded, and the first conversion downloads the encoder once (about 10 MB, then cached).
A few files today. Next month it is the whole library.
AudioEncode in the studio converts whole folders to your chosen format and bitrate in one batch, keeps the tags intact and files everything in a permanent library. Sign up: 3 full packs free.
Frequently asked questions
Why convert FLAC to MP3 at all?
Because a lot of players, car stereos and phones still will not touch FLAC. A FLAC album is typically three to five times the size of the same album as MP3, which matters on a phone or a USB stick. Converting gives you a copy that plays anywhere and fits.
Which bitrate should I choose?
320 kbps is the safe answer for a car stereo, a phone or a party; it is as good as MP3 gets and the files are still small. 128 kbps is for spoken word, podcasts and anything where size matters more than detail. If your encoder offers a VBR setting around V0, that lands near 320 kbps quality at a slightly smaller size.
Does converting lose quality?
Yes — MP3 is a lossy format, so this throws detail away permanently. Keep your FLAC files as the masters and treat the MP3s as copies for convenience. Never convert an MP3 back to FLAC and expect the detail to come back; it does not.
Why does the first conversion take longer?
The page downloads an encoder once (roughly 10 MB) and caches it in the browser. The first file has to wait for that; after it, conversions start immediately and the rest of the batch runs locally. Nothing is uploaded at any point.