Convert MKV to MP3
MKV (Matroska) is a flexible container often used for movies, TV episodes and OBS screen recordings. It can hold many audio formats; AAC, Opus, Vorbis and MP3 tracks convert directly in your browser.
How to convert MKV to MP3
- 1
Select your MKV file
Drop the file in or click to choose it. It opens directly in your browser.
- 2
Choose the MP3 quality
128 kbps keeps files small, 192 kbps suits most audio, and 320 kbps gives the best music quality.
- 3
Convert and download
The audio track is decoded and encoded to MP3 on your device. Download the MP3 when it is done.
Frequently Asked Questions
Why won't my MKV file convert?
MKV files sometimes carry AC-3, E-AC-3 or DTS audio, which browsers usually cannot decode. Files with AAC, Opus, Vorbis or MP3 audio work.
Is this MKV to MP3 converter free?
Yes. It is free with no account, no watermark and no limit on the number of files.
Is my file uploaded to a server?
No. Conversion runs locally in your browser using WebCodecs, so your file never leaves your device.
Is there a file size limit?
There is no upload, so there is no upload limit. Very long videos are limited only by your device's memory.