Convert MKV to MP3 for free, right in your browser. Drop a file, wait a few seconds and download. Turns OBS recordings and screen captures into a shareable audio file.
Yes. The MKV to MP3 Converter is free with no sign-up and no watermark. It converts on your device, so your file is never uploaded.
Convert MKV to MP3 right in your browser. Files never leave your device, so there is no upload wait and no size queue.
Drop your MKV file or tap to choose
Up to 1 GB. Converted on your device.
How the MKV to MP3 converter works: drop a file, it converts on your device, download the result.
Drag it onto the box, or tap to choose it.
Your browser decodes and re-encodes it while a bar shows progress.
Preview it, then download a file named like the original.
OBS Studio users, mostly. OBS has long recommended MKV for recordings because a crash or power cut leaves a playable file, while an interrupted MP4 is often lost. Game captures, livestream archives and many screen recorders write MKV, and browser recorders save WEBM.
A one-hour 1080p MKV can run to several gigabytes, mostly picture. The MP3 of the same session at 192 kbps is around 85 MB, small enough to email, upload to a podcast host or feed into a transcription service.
OBS can record up to six separate audio tracks, for example your microphone on one and game sound on another. This converter exports the primary track only. If that is the wrong one, tick track 1 for your microphone in OBS Advanced Audio Properties before your next session.
Yes. OBS recordings are often MKV files. Drop the file here and you get the audio as an MP3, useful for podcasts, notes or transcription.
The converter uses the main audio track. If you recorded mic and desktop audio separately in OBS, the first track is the one exported.
No. It converts inside your browser, on your own device. Nothing reaches FacelessGenie or any other server.
Files up to 1 GB work. Long recordings simply take longer on slower devices.
Recent Chrome, Edge and Safari handle every format here. Firefox opens most audio. For MP3 problems, Chrome or Edge is the safest retry.