MKV to MP3 extractor.
Pull the audio out of any MKV video and save it as an MP3 that plays anywhere.
Drop a video here or click to browse
MKV · processed privately, never uploaded
MKV is a flexible container built for high-quality video, but sometimes all you actually want is the sound, a song, a talk, a dialogue track, without hauling around the huge picture file. This tool lifts the audio out and hands you an MP3 that plays everywhere. Your file stays yours: nothing is uploaded, there's no account, and no watermark ever touches the result.
Why grab the audio and drop the video
An MKV holding a concert, a webinar, or a full lecture can run into the gigabytes, and most of that weight is picture you don't need if you only plan to listen. Extracting the audio gives you a file that's a fraction of the size and works on gear that won't touch Matroska at all, older phones, car stereos, cheap MP3 players, podcast apps. MP3 is the most universally supported audio format there is, so once the track is out you can sync it, share it, or loop it without worrying whether the other device speaks MKV. You keep the sound and lose the bulk.
Which bitrate fits what you're keeping
Bitrate is the one dial here, and it trades file size for fidelity. Pick 320 kbps for music you care about, expect roughly 2.4 MB per minute, so a three-minute song lands near 7 MB. For most everyday use, 192 kbps is the sweet spot at about 1.4 MB per minute, clean enough for music and easy on storage. If you're pulling a lecture, interview, or any spoken-word track, 128 kbps runs around 1 MB per minute and voices still come through clearly. When you're unsure, 192 rarely disappoints.
What the MP3 will actually contain
The output is the entire length of the video at its original volume, no trimming, no fade-in or fade-out, and no loudness normalizing, so what was in the source is what you'll hear. If your MKV carries several audio tracks, such as different languages or a commentary track, the primary one is what gets extracted. And if the file has no audio at all, there's simply nothing to pull out. Knowing this up front saves surprises: plan any editing, cutting, or volume tweaks for after you've got the MP3 in hand.
Tips
- Reach for 192 kbps as your default, it sounds good and keeps files small at about 1.4 MB per minute.
- Save 320 kbps for actual music; for a talk or lecture, 128 kbps is plenty and stores tighter.
- Expect the full runtime at the original volume, no trimming or leveling happens, so edit afterward if you need to.
- If your MKV has multiple language or commentary tracks, only the primary audio is extracted.
How it works
- 01
Add your MKV
Drop in the Matroska video you want the audio from, a rip, a recording, a lecture, or a music capture.
- 02
Pick a bitrate
Choose 320 kbps for music, 192 for a solid all-round file, or 128 for speech.
- 03
Save the MP3
Grab the full-length audio track as an MP3 you can play on any phone, car stereo, or app.
Questions
- Is my MKV file kept private?
- Nothing is sent to a server, so the video and the MP3 you get back never leave your hands. There's no account to sign up for, no email to hand over, and the finished file carries no watermark, just your audio, free.
- Will the whole video's audio be converted, or can I pick a section?
- The MP3 covers the complete length of the video at its original volume. There's no trimming, fading, or normalizing built in, so you'll get the full track exactly as it sounds in the source. If you need a clip or a volume adjustment, do that in an editor after you've saved the MP3.
- My MKV has more than one audio track, which one comes out?
- The primary audio track is the one that gets extracted. If the file bundles extra tracks, like alternate languages or a director's commentary, those aren't pulled separately. And if the MKV happens to have no audio stream at all, there's nothing to convert.
- Which bitrate should I choose?
- Match it to the content. Use 320 kbps for music (about 2.4 MB per minute), 192 kbps as a reliable all-purpose choice (about 1.4 MB per minute), and 128 kbps for speech (about 1 MB per minute). Higher bitrates sound better but make bigger files.