Convert FLAC to MP3, Free
Files convert instantly in your browser. 100% private, any file size, no account needed.
Drop your FLAC file here
or click to browse. Any file size.
Conversion runs entirely in your browser. Your file never leaves your device.
How to convert FLAC to MP3
FLAC (Free Lossless Audio Codec) compresses audio without discarding any data, so a FLAC file and its source WAV are bit-for-bit identical when decoded. The tradeoff is size: a FLAC file is typically 40 to 70 percent the size of the equivalent WAV, but still 5 to 10 times larger than an MP3 at 320 kbps. Converting FLAC to MP3 is the right move when you need the audio on a device with limited storage, or when you are sharing music with someone who just wants to listen rather than archive.
This converter processes your FLAC file directly in your browser using WebAssembly. The lossless audio is decoded to raw PCM samples and then re-encoded as MP3 at the bitrate you choose. No audio is ever uploaded to a server, and there is no file size cap from a server-side restriction. Processing speed depends on your CPU since all work happens locally.
Upload your FLAC file
Drop the .flac file onto the converter. FLAC files range from a few MB for short tracks to hundreds of MB for high-resolution albums. All processing happens locally so size does not impose a wait.
Choose the MP3 bitrate
320 kbps is the highest MP3 bitrate and gives you the best quality from the lossless source. 192 kbps is where most listeners cannot distinguish MP3 from lossless in controlled tests. 128 kbps is practical for casual listening on earbuds.
Convert in browser
The WebAssembly engine decodes the FLAC stream and runs the MP3 encoder. A four-minute track at standard CD resolution typically converts in 10 to 20 seconds on modern hardware.
Download and keep the original
Download the MP3. Keep the FLAC as your archive copy; you can always re-convert to MP3 at a different bitrate later since FLAC is lossless.
Frequently asked questions
Does converting FLAC to MP3 cause quality loss?
Yes. MP3 is a lossy format that applies perceptual compression, discarding audio information that psychoacoustic models predict will not be noticed. The FLAC source is lossless, so the quality of the MP3 is determined entirely by the bitrate you choose. At 320 kbps, the difference from the original is inaudible in most listening tests.
Should I keep the FLAC after converting?
Yes, if storage permits. A FLAC is your lossless master copy; if you later decide you need a higher bitrate MP3, or want to encode to another format, you can re-convert from FLAC without any generation loss. Converting from an MP3 to a higher bitrate MP3 degrades quality further.
Is the audio uploaded to a server?
No. The entire conversion runs in your browser via WebAssembly. Your audio never leaves your device.
Does FLAC contain metadata like track names and album art?
Yes. FLAC uses Vorbis comment tags for metadata and supports embedded album art. The converter transfers ID3 tags and album art to the MP3 file during conversion.
What about 24-bit or 192 kHz hi-res FLAC files?
MP3 is defined up to 48 kHz. The converter downsamples hi-res audio to 44,100 Hz before encoding, which is the standard for audio CDs. The 24-bit depth is reduced to 16-bit equivalent through the encoding process. This is expected behavior, not a bug.