MKV to MP3
Reaches into a Matroska MKV, grabs the audio, and writes it out as MP3.
Drop an MKV file here
Everything happens on your device — your files are never uploaded.
file.mkv
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Converting…
Done
How it works
- 1 Drop your MKV video or pick it from your device.
- 2 Hit Convert to MP3 and watch the progress bar pull out the audio.
- 3 Download your MP3. It never leaves your browser.
Built with open source
- Mediabunny — Converts and edits video and audio in the browser via WebCodecs. Add-on encoders cover MP3, AAC, and FLAC. · MPL-2.0
Frequently asked
Does my MKV get uploaded anywhere? +
No. The audio is pulled out and encoded in your browser with WebCodecs and an in-browser MP3 encoder. The file stays on your device.
My MKV has several audio tracks. Which one is used? +
Matroska files often carry multiple audio tracks like languages and commentary. This grabs the primary track and encodes that one to MP3.
Why does it take a moment? +
Browsers have no built-in MP3 encoder, so the MKV's audio is decoded and re-encoded with a LAME-based encoder. Longer recordings take a bit more time.