Pull the audio out of an MKV video file and save it as an MP3 — local, free, no signup.
MKV is popular for archival video — movies, full concerts, gaming footage — and often contains high-quality audio you'd like to listen to without the visuals. Maybe you want to stick a concert on your phone as an MP3; maybe you've got a long interview and want it for your podcast queue. Either way, extracting the audio to MP3 is the right move.
MKV can carry almost any audio codec, so the conversion always starts with a decode to raw PCM, then re-encodes to MP3. If the source codec was already lossy (AAC, MP3, Vorbis, Opus), there's a small compound-loss penalty; if it was lossless (FLAC, PCM), the MP3 is the first and only lossy pass. All processing happens in your browser.
MKV (Matroska) is a flexible open-source container often used for high-quality releases. It can pack almost any codec, which is why MKVs sometimes fail to play on devices that only understand MP4.
MP3 is the most universally compatible lossy audio format — plays on every phone, car stereo, and audio player ever made.
Drag a MKV onto the converter above, or click the box to pick one from your device.
We've preselected MP3 as the output format. Change it from the dropdown if you want a different target.
Click Convert and wait for the progress bar to finish. Download the MP3 when it's ready.
Convert an MKV (Matroska) video to MP4 so it plays on phones, TVs, and every video editor — free, in your browser.
Pull the audio out of any MP4 video and save it as an MP3 — free, private, runs in your browser.
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