What is MKV?
MKV (Matroska) is a flexible video container common for screen recordings, OBS captures and downloaded videos.
All tools
MKV to MP3 converter
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.
MKV to MP3 Converter
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.
Tool details
How to convert MKV to MP3
- 01
Drop your MKV file
Drag it onto the box or tap to pick it from your device.
- 02
Let it convert
Your browser decodes the audio and re-encodes it. A progress bar shows how far along it is.
- 03
Download the MP3
Preview it on the page, then download the new file with the same name as the original.
About this tool
Why convert to MP3?
MP3 keeps files small and plays everywhere, so it is the safest choice for sharing, podcasts and adding a voiceover to an editor.
Private by design
Most online converters upload your file to their servers. This one does the work locally, so recordings of meetings, interviews or unreleased music never leave your computer or phone.
Frequently asked questions
Can I convert an OBS recording to MP3?
Yes. OBS records to MKV by default. Drop the file here and you get the audio as an MP3, useful for podcasts, notes or transcription.
What if my MKV has several audio tracks?
The converter uses the main audio track. If you recorded mic and desktop audio separately in OBS, the first track is the one exported.
Is my MKV file uploaded anywhere?
No. The conversion runs inside your browser on your own device. Your file is never sent to FacelessGenie or any server, which also means there is no upload wait.
Is there a file size limit?
You can convert files up to 1 GB. Very long files take longer because your device does the work, but the page shows progress while it runs.
Which browsers work?
Recent versions of Chrome, Edge and Safari handle every format here. Firefox works for most audio files. If a file will not open, try Chrome or Edge, which support the widest range of MP3 encoding.