Private media conversion
MKV to MP3 Converter
Extract audio from an MKV video and save it as a widely playable 192 kbps MP3 on your device.
The engine downloads once from a CDN. Your media remains on this device.
How to use the mkv to mp3 converter
- STEP 1Choose a MKV file up to 200 MB.
- STEP 2Convert it locally to MP3.
- STEP 3Download the finished MP3 file.
About this tool
Create an audio-only copy of Matroska interviews, recordings, lectures, films, and archived video when the picture is unnecessary.
The video is removed and FFmpeg selects and encodes the default audio stream. Alternate audio tracks are not combined.
Processing time depends on duration, source bitrate, output format, and device performance.
Frequently asked questions
Which audio track is converted?
FFmpeg selects the primary/default audio stream. This streamlined tool does not provide a track selector for multilingual MKV files.
Is my MKV file uploaded?
No. FFmpeg WebAssembly performs the conversion in your browser. The engine downloads from a CDN, but your media stays on your device.
What is the maximum file size?
The browser converter accepts files up to 200 MB. Long files may require substantial device memory.