convert mkv to mp3


Convert audio files to MP3 files

Convert any audio (M4A, WMA, WAV...) or video (MP4, AVI...) to MP3 without installing any software! CloudConvert does this conversion for you with highest quality. As default setting your MP3 file will be ~250 kbps VBR (variable bitrate) encoded. If you want to get a even higher bitrate (e.g. 320 kbps constant bitrate / CBR) you can use the advanced settings () to change the encoding. The following options are available:
Trim: Cut the resulting MP3 at the beginning and / or the end. The start / end timestamp must be formated as HH:MM:SS.
Audio Variable Bitrate: Set the target bitrate range. We recommend to use a variable bitrate (VBR) because the bitrate will be automatically adjusted to the actual needed bitrate. If you want to you can select and set a constant bitrate (CBR) here, also.
Audio Channels: If you want to get mono instead of stereo output, you can set it here.
Audio Frequency: The sample rate for the output MP3. Normally this is 44100 Hz.
Audio Normalization: If your input audio is too quiet (or too loud) you can boost the volume here.

Matroska file mkv

MKV (Matroska video File) is a video container format that supports more than one audio and subtitle tracks at the same file. It is based on Extensible Binary Meta Language. It supports several video and audio compression formats. The difference between MKV file types with most other video extensions is that it is a container, not a codec.

MPEG-1 Audio Layer 3 mp3

MP3 is an audio format that can compress and encode an audio file. It uses the lossy compression algorithm to contain audio data. The lossy compression helps to reduce the data significantly without losing audio quality. MP3s are created using different bit rates maintaining the original quality.

215 formats supported

CloudConvert supports the conversion between more than 200 different audio, video, document, ebook, archive, image, spreadsheet and presentation formats. Check the supported formats for more details.

file conversion in the cloud

There is no need to install any software on your computer! Upload your files to CloudConvert and we will do the job for you. Don't worry, your files are safe and only you can access them. They will be deleted again as soon as your conversion is finished.

advanced features

Most conversion types support advanced options, for example setting the codecs of audio/video files. Also, we support batch converting and folder monitoring!

powerful API

The CloudConvert API offers the full functionality of CloudConvert and makes it possible to use the conversion services in your own applications.


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