How to convert MKV to MP3
- Add your MKV videos. Drag them onto the box above or click to browse. You can add several at once.
- Pick a quality. 192 kbps suits most uses; choose 320 kbps for the best quality or 128 kbps for smaller files.
- Download. Each MP3 gets its own download button as soon as it’s ready.
What is MKV?
MKV (Matroska) is a flexible video container that can hold almost any audio and video codec, which is why it’s popular for screen recordings from OBS and high-quality video archives. Converting MKV to MP3 keeps the audio — a recorded stream, a talk, a performance — in a format everything can play.
Tips
- OBS recordings in MKV convert directly; there’s no need to remux them first.
- MKV files often contain AC3 or DTS surround audio — the MP3 is downmixed to stereo.
- The first MKV conversion may download our converter engine (about 30 MB) once.
MKV to MP3: questions
Can I convert OBS recordings?
Yes. Drop the .mkv file in and the audio is saved as MP3.
What happens to 5.1 surround audio?
It’s mixed down to stereo, which is what MP3 supports.
My MKV has several audio tracks — which one is used?
The default (first) audio track is converted.
Are my files uploaded?
No. Anything to MP3 converts MKV to MP3 inside your browser, so your files never leave your device.