FLAC to MP3 Converter
Drop a FLAC, get a small, universally-compatible MP3. Runs in your browser — no upload, no signup.
Drop your FLAC file here
Converts to .mp3 — stays on your device
Why convert FLAC to MP3?
- Making FLAC rips from a personal CD library playable on an iPhone, iPod, or any Apple device that refuses to index FLAC natively.
- Shrinking lossless FLAC downloads from Bandcamp or HDTracks for a car stereo or Bluetooth speaker that only reads MP3.
- Converting audiophile FLAC masters for a Peloton, Apple Watch, or Garmin workout device where FLAC isn't supported.
- Preparing FLAC recordings from a Zoom H5, Sound Devices recorder, or mobile studio for a podcast host that expects MP3.
- Uploading live concert FLAC files from an Archive.org torrent to a Spotify playlist's local files where MP3 syncs more reliably.
- Saving desk space on a smartphone by keeping FLAC on the NAS as the master and carrying MP3 copies on the phone.
How our converter works
Your FLAC is decoded losslessly by a WebAssembly ffmpeg build in your browser, then re-encoded as 192 kbps constant-bitrate MP3 at 44.1 kHz. Since FLAC is lossless, this is a clean 'first lossy pass' — quality loss is minimal and usually inaudible at 192 kbps. File size drops dramatically: a 40 MB FLAC track typically becomes a 5–7 MB MP3. Nothing is uploaded — unreleased masters, concert archives, and audiobook files stay on your device.
FLAC vs MP3 — what's the difference?
| Feature | FLAC | MP3 |
|---|---|---|
| Compression | Lossless — zero audio data lost | Lossy — psychoacoustic compression |
| File size | ~30–40 MB per 3-minute song | ~4–6 MB per 3-minute song |
| Quality | Bit-perfect original | Transparent at 192 kbps for most listeners |
| Device support | Desktop players, some phones | Every device ever made |
| Best for | Audiophile archives, mastering, long-term storage | Phones, cars, workout devices, streaming |
Frequently asked questions
Will I lose audible quality?
Unlikely for normal listening. FLAC is lossless, so the first conversion to MP3 at 192 kbps is a single, clean compression pass. On high-end headphones in a quiet room you might detect subtle differences in cymbals or reverb tails; in the car or at the gym, the output is indistinguishable from the original.
What bitrate does the output use?
192 kbps constant bitrate at 44.1 kHz — a widely accepted transparent bitrate for MP3. If you're an audiophile who needs 320 kbps, a desktop tool (XLD, dBpoweramp, foobar2000) gives you more control.
Do ID3 tags (artist, album, etc.) carry over?
Basic tags (title, artist, album, track number) transfer when present in the FLAC. Embedded album art may or may not survive depending on the FLAC's metadata format. For mission-critical tagging, check and re-tag with Mp3tag or similar after conversion.
Can I batch-convert an entire album?
Yes. Drop or select multiple FLAC files and they convert sequentially. For albums (10+ tracks), the output is delivered as a ZIP — then use a tag editor to add cohesive metadata.
Are my files uploaded?
No. The conversion runs entirely in your browser via WebAssembly. Audiophile collections, unreleased masters, and private concert recordings never leave your device.
Is there a file size limit?
Around 500 MB for the source FLAC — that covers about an hour of stereo 16-bit audio. For hour-long classical recordings or uncompressed concert sets, a desktop converter is more reliable.
About the FLAC format
FLAC (Free Lossless Audio Codec) was released by Xiph.Org in 2001 as an open, patent-free, bit-perfect compression format. Where WAV stores every sample verbatim at ~10 MB/minute, FLAC uses predictive and entropy coding to shrink the file ~50% while staying perfectly lossless — decoding gives you back an identical PCM stream. That made FLAC the default for audiophile libraries, lossless streaming services (Tidal, Qobuz), and digital-music retailers (Bandcamp, HDTracks). The downside: phones, car stereos, and workout devices often lack FLAC support, which is why keeping FLAC as the master and exporting MP3 for daily carry is the standard audiophile workflow.