MKV to MP3 Converter

Convert MKV to MP3 format online for free.
Upload your fileClick Choose File button to get started or drag and drop files to upload.
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What is MKV?

MKV (Matroska Multimedia Container) is a universal video file format that holds an unlimited number of video, audio, picture, or subtitle tracks in a single file. It’s often used for movies and TV shows because it provides lossless compression — which means better quality.

One downside to MKV files is that they’re usually pretty big, which makes it harder to send them or store them on your device. MKV video files also aren’t compatible with as many players as MP4; the most common players that accept MKV are Windows Media Player, VLC and DivX Player.

What is MP3?

An MP3 is a digital audio file that’s compressed so it’s easy to store and transfer. It’s a lossy format, meaning it drops some of the audio’s sound when it’s compressed. Most of this dropped sound is inaudible when you play it back, however. MP3 files can be about one-tenth the size of lossless audio files, making them easy to share, store and play back on most devices.

Frequently Asked Questions

How to convert MKV to MP3 online?

  1. Choose a MKV file from your computer or drag and drop it into Restream’s audio converter.
  2. Select Convert and the converter will start processing.
  3. Download your MP3 file when it’s ready.

Will my file lose quality when I convert MKV to MP3?

Depending on which file type you’re starting with, you might lose a little bit of quality when converting to MP3, but it’s such a small amount that it’s not noticeable.

Supported file formats


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