Convert MKV to MP3
Pull the soundtrack out of any MKV video and save it as MP3 in seconds. Conversion happens inside your browser, so even large or private videos are never uploaded.
Drop MKV files here
MP3, WAV, FLAC, M4A, OGG, OPUS, AAC, AIFF, WMA, AMR, MP4, MOV & more · Processed on your device - nothing is uploaded
How to convert MKV to MP3
- Click "Choose files" or drag your MKV videos onto the page.
- Make sure "MP3" is selected as the output format (192 kbps is a good default).
- Optionally click Edit to trim, adjust volume or add effects.
- Click Convert, then Download your MP3 files.
Why convert MKV to MP3?
MP3 files are much smaller than video and play on any music player, phone or car stereo.
MP3 is best for music libraries, sharing, podcasts and playback on any device. Plays on virtually every phone, computer, car stereo, browser and media player.
Will I lose quality?
The audio is decoded from the MKV video and encoded to MP3. Choose a lossless format (WAV/FLAC) for zero loss, or a high bitrate for MP3.
MKV vs MP3
| MKV | MP3 | |
|---|---|---|
| Full name | Matroska Video | MPEG-1 Audio Layer III |
| Type | video | lossy |
| Best for | films, TV recordings and archives | music libraries, sharing, podcasts and playback on any device |
| Typical size | varies | ~1.4 MB at 192 kbps per minute |
| Compatibility | VLC, Plex, Kodi, most modern players. | Plays on virtually every phone, computer, car stereo, browser and media player. |
| Developed by | - | Fraunhofer IIS / MPEG (1993) |
MKV to MP3: questions
How do I convert MKV to MP3?
Open this page, add your MKV file, make sure MP3 is selected as the output format and click Convert. Your MP3 file is ready to download in seconds.
Will converting MKV to MP3 lose quality?
The audio is decoded from the MKV video and encoded to MP3. Choose a lossless format (WAV/FLAC) for zero loss, or a high bitrate for MP3.
Is this MKV to MP3 converter free and safe?
Yes. It's free with no watermark or sign-up. Files are processed locally in your browser, so your audio is never uploaded or stored on our servers.
Can I convert many MKV files to MP3 at once?
Yes - add up to 5 files at a time on the free plan (unlimited with Pro), convert them all with one click and download them as a ZIP.
What is the difference between MKV and MP3?
MKV (Matroska Video) is a video format, an open container that can hold many audio, video and subtitle tracks. MP3 (MPEG-1 Audio Layer III) is a compressed (lossy) format: the most widely supported compressed audio format. MP3 removes sounds the ear is unlikely to notice to make files about 10x smaller than CD audio.
Does it work on Mac, Windows, iPhone and Android?
Yes. The MKV to MP3 converter runs in any modern browser - Chrome, Safari, Edge or Firefox - on desktop and mobile. No software to install.