Convert MKV to MP3
Extract audio from MKV videos — OBS recordings, screen captures, and downloads — as MP3 files that play anywhere.
This conversion runs in this browser tab. The selected file is not uploaded for processing.
MKV to MP3, step by step.
These steps describe the MKV input and the MP3 export for this exact route.
Upload MKV Videos
Drag and drop your MKV videos or click to browse. You can queue several at once.
Convert in Your Browser
The first run fetches the conversion engine (a one-time ~31MB download); after that, MKV to MP3 conversion happens entirely on your device — nothing is uploaded.
Download MP3
Save the converted file right away. Multiple files are bundled into a ZIP for one-click download.
What to expect
What matters for MP3 output.
Review the behavior this MKV to MP3 tool is designed to preserve, expose, or simplify.
100% Private
All processing happens in your browser. Your files never leave your device.
Plays Everywhere
MP3 is the one audio format every device, app, car stereo, and browser of the last two decades can play.
One-Time Engine Download
The first conversion fetches a ~31MB audio engine; your browser caches it, and everything runs locally from then on.
Questions about MKV and MP3.
Check the format behavior, limitations, and follow-up options before processing a real file.
MKV is the container OBS records to by default and a common wrapper for downloaded video, but almost nothing outside desktop video players opens it. When what you actually need is the audio — a recorded stream, a talk, commentary, a podcast captured on video — converting to MP3 produces a small file that plays on every phone, player, and app, no Matroska support required.
Related routes
Continue from MP3.
Choose another format only when it matches the next job.
Next step
Ready to process another MKV file?
Start here again, or compare plans when the job needs server capacity, retention, or repeat automation.