Extract Audio from MKV - Free
Pull the soundtrack out of an MKV and download it as an MP3. Free, in your browser.
- Free to start
- In your browser
- Up to 1GB
Extract Audio from MKV in 3 steps
Upload your MKV
Drag and drop the MKV file, or click to browse. Anything under 1GB.
MP3 is already selected
The output is pre-set to MP3. Switch to WAV in the panel if you want it uncompressed.
Extract and download
Create a free account to download the audio, or keep editing in REQO.
Getting the sound out of MKV
MKV (Matroska) is an open container that can hold any codec plus unlimited audio tracks, subtitle tracks and chapters. That flexibility makes it great for archives and useless for sharing.
The picture is dropped and the audio is written as MP3 (MP3 (lossy)), which every phone, car stereo and podcast host plays. If the MKV carries several audio tracks, the MP3 carries one of them. Your MKV itself is not changed.
Container
Typical codecs
Plays on
File size
| Feature | Your MKV | The MP3 you get back |
|---|---|---|
| Container | Matroska | MPEG audio layer III |
| Typical codecs | Almost anything: H.264, HEVC, AV1, VP9 | MP3 (lossy) |
| Plays on | VLC and desktop players; rarely anywhere else | Every device made in the last 25 years |
| File size | Depends entirely on the codec inside | Roughly a tenth of uncompressed audio |
Before you extract audio from an MKV
An MKV often holds several audio languages and subtitle tracks. Converting renders one video and one audio track, so extra languages and embedded subtitles are not carried over; add captions in the editor instead.
Browsers, iPhones and most upload forms do not accept MKV, which is why a file that plays in VLC still needs converting before it can be shared.
extract audio from mkv: questions
Can I get WAV instead of MP3?
Yes. Switch the output to WAV in the panel before exporting. WAV is uncompressed, so it is several times larger, and it is what an audio editor would rather have.
Does my MKV lose anything?
No. REQO reads the audio out of your MKV and writes a new file; the MKV you uploaded stays exactly as it was.
Is extracting audio from MKV free?
Yes. Extract and preview free, and a free account downloads the result. Free exports and share pages include a small REQO badge. Go Pro to remove it.
Other presets
Everything else you can do here.
All extract audio from video presets
Crop for a platform
Crop to a ratio
Resize to a resolution
Compress for a destination
Compress a format
Rotate or flip
Change the frame rate
Subtitles in another language
Convert a caption file
Need more than extract audio from mkv?
REQO is a full browser video editor: record, edit by transcript, caption and export.