MKV to MP3 Converter
Take the sound track out of MKV videos and save it as MP3, entirely on your device.
MKV videos of any size (they are read in pieces). Files stay on your device.
How it works
- Choose your MKV video, or drop it on the page. You can add several files at once.
- Choose MP3 quality: a bitrate (128 to 320 kbps; 192 kbps is a common balance) or leave the default.
- Click Convert. Processing happens on your device and shows progress; you can cancel at any time.
- Preview the result and download the MP3 file. With several files, download them all as one ZIP.
About MKV to MP3 conversion
MKV is a video container: matroska video, usually with any video codec; audio is often aac, ac-3, dts, flac or opus. This tool reads the audio track and leaves the picture behind. The audio track is decoded and encoded again as MP3, so choose a bitrate that matches the original.
MP3 (MPEG-1/2 Audio Layer III) is a lossy format that suits music libraries, podcasts and sharing when you cannot know what the listener uses.
Size depends on the video and the MP3 settings you choose. As a guide, a 4-minute MP3 track at its typical bitrate is about 6 MB.
MKV vs MP3
MP3 support: Plays on virtually every phone, car stereo, TV, browser and media player made in the last 25 years.
MKV support: Common for downloads and ripped media; unsupported on many phones and TVs.
| Detail | MKV | MP3 |
|---|---|---|
| Type | Depends on the audio codec | Lossy |
| Codec | any video codec; audio is often AAC, AC-3, DTS, FLAC or Opus | MP3 |
| Typical bitrate | depends on the audio codec inside | 128 to 320 kbps; 192 kbps is a common balance |
| A 4-minute track | varies with the video | about 6 MB |
| File extensions | .mkv, .mka | .mp3 |
| Best for | multiple audio tracks, subtitles and chapters in one file | music libraries, podcasts and sharing when you cannot know what the listener uses |
| Introduced | 2002 | 1993 |
Quality and compatibility notes
- MP3: Each re-encode loses a little more detail, and there is no true gapless support without extra tags.
- MP3 bitrate range: 128 to 320 kbps; 192 kbps is a common balance.
- Tags: MP3 stores ID3v1 and ID3v2 tags, including cover art.
Questions
Does converting MKV to MP3 reduce quality?
A small amount of detail is discarded, which is how MP3 gets smaller. At a reasonable bitrate the difference is hard to hear.
How big will the MP3 file be?
Size depends on the video and the MP3 settings you choose. As a guide, a 4-minute MP3 track at its typical bitrate is about 6 MB.
Is my MKV file uploaded anywhere?
No. The conversion runs in your browser on your device. The file is never sent to a server, and nothing is stored after you close the page.