To convert MKV to MP3, select or drop your .mkv file above, check that MP3 is chosen as the output, and click Convert. This conversion runs on our server, and your files are deleted 72 hours later.
What is an MKV file?
MKV – Matroska video. MKV (Matroska) is a flexible open container that can hold any number of video, sound and subtitle tracks. Media players love it; phones and some TVs do not. Converting makes a new file: the video is decoded and encoded again, so converting from a format that lost detail never brings it back.
MKV Converter →What is an MP3 file?
MP3 – MP3 audio. MP3 is the most widely played audio format: music compressed to about a tenth of its size, which every phone, player and car stereo plays. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost.
MP3 Converter →How to convert MKV to MP3
- Click Select File, or drop your .mkv files anywhere on this page. You can add several at once.
- Check that MP3 is chosen as the output format. On this page it is picked for you.
- Click Convert. When a file has to go to our server, the button says Upload and convert instead.
- Click Download next to each file when it's done.
MKV vs MP3: how they compare
| MKV | MP3 | |
|---|---|---|
| Layout | Moving pictures and sound | A stream of sound |
| Editable | In video editors | In audio editors |
| Created by | Matroska team, 2002 | Fraunhofer, 1993 |
| Best for | Films with several sound tracks and subtitles | Music on any device |
Good to know
- The sound of the video is made into an MP3 file; the pictures are left out. Only the first sound track is converted.
Frequently asked questions
Is converting MKV to MP3 free?
Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.
Are my MKV files uploaded anywhere?
This conversion runs on our server, because converting video needs ffmpeg, which does not run in a browser. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.
How large can the MKV file be?
Up to 1 GB per file. This conversion runs on our server, which accepts files up to that size.
Will the MP3 look the same as the MKV?
Only the sound is kept: the pictures are left out, and the MP3 is made from the first sound track.
Can I convert several MKV files at once?
Yes. Add as many files as you like; they are converted one after another, and each one gets its own Download button.
Convert MKV to other formats
- MKV Converter
- MKV to AAC Converter
- MKV to AIFF Converter
- MKV to AVI Converter
- MKV to FLAC Converter
- MKV to FLV Converter
- MKV to GIF Converter
- MKV to M4A Converter
- MKV to MOV Converter
- MKV to MP4 Converter
- MKV to WAV Converter
- MKV to WEBM Converter
- MKV to WEBP Converter
- MKV to WMA Converter
- MKV to WMV Converter
Convert other files to MP3
- Convert to MP3
- MP4 to MP3 Converter
- MOV to MP3 Converter
- AVI to MP3 Converter
- WEBM to MP3 Converter
- WMV to MP3 Converter
- FLV to MP3 Converter
- WAV to MP3 Converter
- M4A to MP3 Converter
- FLAC to MP3 Converter
All video formats
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