MKV to WEBM Converter

Convert MKV to WEBM format online for free. No account required.
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 WEBM?

WEBM is an open, royalty-free video file format designed as an alternative to HTML5 video and audio elements. As you can probably guess from the name, WEBM files are primarily intended for use on the web. It’s highly compatible with most modern web browsers — but not as compatible with as many devices as MP4 is.

WEBM is the ideal format for streaming videos online because it has high-quality playback even on devices with lower technical capabilities. The quality of a WEBM video isn’t as high as the quality of an MP4 video, though.

Frequently Asked Questions

How to convert MKV to WEBM online?

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

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

Depending on which file type you’re starting with, you might lose some quality when converting to WEBM, since it’s a lossy file format. Lossy files lose some data during compression, which can decrease the overall audio quality.

Is WEBM better than MKV?

WEBM files are more compressed and smaller in size than MKV, but MKV files are higher in quality.

Supported file formats


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