Shrink lossless FLAC files to portable MP3 for your phone or car, at up to 320 kbps. Runs on your device — no upload, no account, free.
FLAC is lossless compression — bit-perfect audio at roughly half the size of WAV — which is why collectors rip CDs to it. The catch is portability: phones, cars, smartwatches, and plenty of players either can't read FLAC or drain battery decoding it. Converting FLAC to MP3 trades the perfect copy for a small, universally supported one, ideal for the library you actually carry around.
Since FLAC is lossless, your first MP3 encode is the only quality loss involved — start from FLAC rather than an existing MP3 and 320 kbps stays effectively transparent. Keep the FLAC files as your archive and generate MP3s for daily use. Your browser decodes the FLAC locally; nothing is uploaded. More on the lossless-vs-lossy tradeoff in how to convert audio formats.
FLAC is lossless — a bit-perfect copy at about half the size of WAV — which is great for archiving but awkward to carry around: many phones, cars, smartwatches, and players either can't read FLAC or burn battery decoding it. Converting to MP3 gives you a small, universally supported file for everyday listening, while you keep the FLAC as your pristine archive copy.
Since FLAC is lossless, the MP3 encode is the only quality-reduction step in the chain, so starting from FLAC gives the cleanest possible result. At 320 kbps the MP3 is effectively transparent for almost all listeners; 256 kbps is very close too. Keep the bitrate high and you're trading a large amount of file size for a difference you're unlikely to hear.
Yes. Your browser decodes the FLAC and encodes the MP3 locally — the file is never uploaded, and nothing needs to download first. You can verify it by going offline after loading a file and converting again. That keeps your library entirely on your own device, which matters if it's music you're not authorized to redistribute or simply prefer to keep off third-party servers.