Convert MKV to MP3Right in Your Browser
Pull the soundtrack out of an MKV video and save it as an MP3 — great for lectures, concerts and movies stored in the Matroska container. Your video never leaves your device.
Drag & drop files here
or click to browse
Your files never leave your device
Select the output format and click Convert
1. Add your files
Drag & drop or click to browse. Multiple files supported.
2. Pick your settings
Choose the output format.
3. Download
Files convert on your device and download instantly.
Frequently Asked Questions
Does the video get uploaded to extract the audio?
No. The MKV is decoded in your browser and only the audio track is written out as MP3 — the video itself is discarded locally and never sent anywhere.
Is it safe to convert MKV videos online?
Yes. Unlike traditional online converters, this tool never uploads your files. The conversion runs entirely inside your browser using WebAssembly, so MKV videos never leave your device — you can even disconnect from the internet after the page loads and it still works.
Is this converter really free?
Yes — completely free, with no sign-up, no watermarks, and no file-per-day limits. Because conversion happens on your own device, there are no server costs to pass on to you.
More Tools
A free, privacy-first online converter built by Softorino.
No sign-up. No ads. No data collection.
Supports the most common video and audio formats — MP4, MKV, MOV, WEBM, GIF, MP3, WAV, FLAC and more — with a focus on Apple-compatible outputs.
Softorino Converter is a free, fast, privacy-first video & audio converter that runs in-browser (no sign-up, no data collection).
Why It Exists
Most top search results for "how to convert [X to Y]" lead to sketchy, ad-heavy websites or tools that:
- —Upload your file to unknown servers
- —Limit free use or add watermarks
- —Track you or show spammy ads
Softorino Convert is trying to be the trusted alternative:
No tracking. No uploading. No BS.