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FLAC converter

FLAC is where music collections and masters live; MP3 and WAV are where they need to go for devices and editors. These conversions run ffmpeg compiled to WebAssembly inside your browser, so your library stays on your machine.

What is FLAC?

FLAC (Free Lossless Audio Codec) compresses audio to roughly half of WAV size while keeping every sample bit-perfect, which made it the archival and audiophile standard. It is open and royalty-free, plays in browsers and most modern software, but car stereos, older devices and plenty of apps still want MP3, and audio editors often prefer plain WAV input.

Convert FLAC to another format

Convert another format to FLAC

Common questions about FLAC

What is a FLAC file?
FLAC (Free Lossless Audio Codec) is an open, royalty-free format that compresses audio without throwing anything away. It typically cuts file size by 30 to 60 percent compared to an uncompressed WAV while keeping the sound bit-for-bit identical to the original. That combination of lossless quality and smaller size makes it a favorite for music archiving and high-resolution audio.
Is FLAC really lossless, and is it better than MP3?
Yes, FLAC is genuinely lossless: decode it and you get the exact original samples back. MP3 is lossy and permanently discards detail to get smaller. FLAC sounds identical to the source where MP3 only approximates it, but FLAC files are larger and not every device or app plays them. Many people keep a FLAC archive and export MP3s for phones and car stereos. hushvert can do both.
How do I open or play a FLAC file?
Most modern media players and many phones support FLAC, but some older players and built-in apps do not. If a device will not play your FLAC, convert it to a more universal format. On hushvert you can convert FLAC to MP3 for broad compatibility, or to WAV for raw uncompressed PCM that audio editors expect. Both run in your browser with no upload, so the FLAC stays on your machine.
What can hushvert convert FLAC to and from?
hushvert converts FLAC to MP3 (small, lossy, plays everywhere) and to WAV (uncompressed lossless PCM). It also converts WAV into FLAC when you want lossless compression. These conversions run client-side via WebAssembly, so your FLAC never uploads anywhere; you can confirm this in airplane mode or by checking the Network tab. It is free and unlimited with no account.
If I convert FLAC to MP3, can I get the FLAC quality back later?
No. Converting FLAC to MP3 is a lossy step: detail is discarded to shrink the file, and converting the MP3 back to FLAC or WAV will not restore what was removed. Keep your original FLAC if you care about full quality, and treat the MP3 as a convenient copy for playback. If you only need an uncompressed working file, convert FLAC to WAV instead, which stays lossless.