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File converter / Video / Audio / Convert to MKV / MP3 converter / MKV to MP3

Convert MKV to MP3

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Choose file to convert to .mp3
or drag and drop file

You can convert MKV file to MP3 as well as to variety of other formats with free online converter.

How to convert mkv to mp3?

Step 1

Upload mkv-file

Select mkv file, which you want to convert, from your computer, Google Drive, Dropbox or drag and drop it on the page.
Step 2

Convert mkv to mp3

Select mp3 or any other format, which you want to convert.
Step 3

Download your mp3-file

Wait till your conversion process will be completed and click download converted mp3 file.

Online and free mkv to mp3 converter

Fast and easy
Just drop your mkv files on the page to convert mp3 or you can convert it to more than 250 different file formats without registration, giving an email or watermark.
Don't worry about security
We delete uploaded mkv files instantly and converted mp3 files after 24 hours. All files transfer with secured an advanced level of SSL encryption.
All in the cloud
You don't need to install any software. All mkv to mp3 conversions make in the cloud and don't use any resources of your computer.

Matroska Video File

File extension .mkv
File category video
Description MKV Matroska is an open source multimedia container format that supports more than one audio and subtitle tracks at the same file. It is the most convenient of file types where you can add a large sum of data, such as videos, audios, texts, and various images. It is basically a RAW format which you can later flip and separate on the basis of needed data tracks.
Technical details Every file whether it is video, audio, subtitle or image it will be stored into a separate data line. It is a lot similar to the MP4 or AVI format although when users are packaging an MKV file they rarely bundle all the tracks within the file. Various media players don't even support the MKV video format therefore, the users need to use specialized media players who can support the MKV format such as VLC media player.
Programs
VLC Media Player
Main program VLC Media Player
Developer Steve Lhomme
MIME type
video/x-matroska

MP3 Audio File

File extension .mp3
File category audio
Description

MP3 (formally MPEG-1 Audio Layer-3 or MPEG-2 Audio Layer-3) is a digital format for storage of audio files as well as for audio streaming. The format was designed by MPEG programmers. It is one of the most required codecs for digital coding. The format is widely used in various file-sharing sites for evaluation downloading.

Due to lossy compression in this audio format, it is possible to compress CD tracks up to 1/10 of their original size while maintaining high playback quality. Moreover, it can be encoded at higher or lower bit rates to adjust the resulting quality. Overtones, which cannot be perceived by a human ear, are removed. Complex algorithms allow for smaller size of tracks. As a result, one compact disk can contain several hundred songs. MP3 is compatible with all most popular operating systems and supported by the most of modern DVD-players and music systems.

Technical details

Prior to MP3 introduction, MPEG-1 had been widely used. That format contained not only audio data, but images as well. MP3 breaks an audio file into parts of the same length. When the processing is over, each part is packed into its own frame. It involves the technology of spectral limit that requires a continuous input signal to provide the use of two adjacent frames.

When spectral deleting is over, the file is to be compressed with mathematic methods. If necessary, compression rate can be changed, even inside the same frame. Files of 128 kbit/s have 11-fold compression. Further reduction of the file size will lead to significant deterioration in sound quality.

Programs
Microsoft Windows Media Player
VLC media player
MPlayer
jetAudio
Zune
Audacity
Apple iTunes
Plex Media Center
Amarok
Xine
Totem
Developer Moving Picture Experts Group
MIME type
audio/mp3
audio/mpeg3
audio/mpg
audio/mpeg
audio/x-mpeg
audio/x-mpeg-3
audio/mp3
audio/x-mpegaudio
audio/x-mpg
audio/x-mp3

FAQ

❓ How can I convert mkv to mp3?
Firstly, select a mkv file you want to convert or drag and drop it. Secondly, select mp3 or any other format you want to convert your file to. Then click convert and wait until your file is converted
⏳ How long should I wait to convert mkv to mp3?
Video conversion usually takes a few seconds. You will convert mkv to mp3 very quickly.
🛡️ Is it secure to convert mkv to mp3 on OnlineConvertFree?
Sure! We delete your uploaded and converted files, so nobody has access to your information. All types of conversion on OnlineConvertFree (including mkv to mp3) is 100% safe.
📱 Can I convert mkv to mp3 without software installation?
Absolutely! OnlineConvertFree doesn’t require installation. You can convert any files (including mkv to mp3) online on your computer or mobile.