MKV to MP3
Files never leave your device.
About MKV to MP3
MKV (Matroska) is a flexible video container that can hold almost any audio track. Convert MKV to MP3 when you need a file that plays on any phone, car stereo, website or app. Only the audio track is kept; the video is dropped. Everything runs in your browser, so the files are never uploaded.
Questions
Are my files uploaded?
No. The conversion runs in your browser, on your device. Your files are never sent to a server, and closing the tab discards everything.
Will converting to MP3 lose quality?
MP3 is a lossy format, so a little detail is traded for a much smaller file. We use 320 kbps by default, or the source’s own bitrate when it’s lower, so the file is never bigger than it needs to be. You can change the bitrate, sample rate and channels in the settings.
Does it work with MKV videos?
Yes. The converter reads the audio track from the MKV and drops the video, so the result is a plain MP3 audio file.
Is there a file size limit?
There’s no set limit. Files are converted on your device, so very large ones depend on its free memory and storage — an hour-long recording converts fine on a recent phone.
Can I convert several files at once?
Yes. Add as many files as you like; they convert one after another to MP3, and you can download each one or all of them together.
Which browsers does it work in?
Current Chrome, Edge, Firefox and Safari on desktop, and Chrome and Safari on phones. Firefox on Android can only convert WAV files. If a file can’t be converted in your browser, its row says so.