Private ffmpeg conversion
Convert FLAC to MP3
Create portable MP3 copies from a lossless FLAC library for phones, cars, speakers, and apps that do not handle FLAC well. The tradeoff is smaller files with lossy compression.
Files
No files selected yet.About FLAC and MP3 conversion
FLAC is a strong format for music libraries because it preserves the source audio losslessly while still compressing better than raw PCM. Compatibility is the usual problem: some car stereos, simple players, and upload flows are built around MP3.
This converter uses ffmpeg.wasm to encode a 192 kbps MP3 from the FLAC file in your browser. The MP3 should be much easier to play broadly, but it is no longer a lossless copy, so keep the FLAC for archival listening or future edits.
The first FLAC or other audio conversion loads a bundled ffmpeg engine of roughly 31 MB from the same origin, then reuses it. The track data remains on your machine; only the conversion engine is fetched by the page.
Does this upload my files?
No. Everything on this page runs locally in your browser, so your files are never uploaded to a server. Close the tab and nothing is left behind. It even keeps working if you go offline after the page loads.
This is true for every tool on this site. Curious how that works? Read how browser-side processing works.
FAQ
Why make MP3 copies of FLAC files?
MP3 is useful for devices, vehicles, websites, and apps where FLAC support is missing or unreliable.
Is FLAC to MP3 still lossless?
No. FLAC is lossless, but the generated MP3 uses lossy compression for portability and smaller size.
Does this upload my music?
No. The browser downloads the ffmpeg.wasm engine once and converts the FLAC locally.