Convert MKV to MP3
Convert your MKV files to MP3 without installing anything, directly in your browser. Processing happens locally: no file ever reaches a server. Extracts the audio track from a video file.
MKV is a container often used for movies and series. Converting MKV to MP3 lets you keep just the soundtrack — useful for OSTs, dialogue, or audio for transcription.
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Why use convert-buddy to convert MKV to MP3?
Free
Free, no signup, no premium tier.
100% local
Files stay in your browser — nothing uploaded.
No tracker
No tracker, no ads, no third-party scripts.
No limit
No file size limit, no daily quota.
Frequently asked questions
Does converting MKV to MP3 reduce audio quality?
This conversion extracts only the audio track from your video file. The original video is not modified — you get a new audio-only file alongside it.
Are my MKV files uploaded to a server?
No. The MKV → MP3 conversion runs entirely in your browser, locally. Open the Network tab in your browser dev tools to verify it for yourself: no outgoing request is made during the conversion.
Is there a file size limit for MKV files?
No limit imposed by convert-buddy. The only constraint is the memory available in your browser — on a modern desktop, multi-gigabyte MKV files work fine.
What devices does MKV to MP3 conversion work on?
Any modern browser: Chrome, Firefox, Edge, Safari, Brave. On Windows, macOS, Linux, iOS and Android. No installation, no signup.
How much does converting MKV to MP3 cost?
Nothing. convert-buddy is fully free, no premium tier, no daily quota, no ads.
Related conversions
If you work with MKV or MP3 files, these conversions may also be useful: