MKV to WEBM Converter

Convert MKV to WEBM online at Convertig.com. Fast, free, and secure video converter—no software needed. Upload your file and get WEBM output instantly.

100 MB maximum file size and upto 5 files.

Make sure you have uploaded valid files otherwise conversion will not be correct

300+ formats supported

We support more than 25600 different conversions between more than 300 different file formats. More than any other converter.

Fast and easy

Just drop your files on the page, choose an output format and click "Convert" button. Wait a little for the process to complete.

How to use MKV to WEBM Converter?

  1. Click the “Choose Files” button to select your files (up to 20 files at a time)
  2. Click on the “Convert” button to start the conversion
  3. When the status change to Done” click the “Download” button

MKV to WEBM Converter FAQs

You would convert an MKV to a WebM specifically for web optimization. While MKV is an excellent storage container, the WebM format is specifically designed for efficient, fast-loading video streaming in web browsers using the HTML5

Most likely, there will be a slight and typically unnoticeable loss in quality. Unless your MKV already uses WebM's specific video and audio codecs (like VP9 and Opus), the file must be re-encoded. While these modern codecs are extremely high quality, the re-compression process is "lossy" and discards a small amount of data.

These extra tracks are usually lost during the conversion. The WebM format has much more limited support for multiple tracks compared to the highly flexible MKV container. The converter will typically preserve only the primary audio track and will have to discard all subtitle tracks and any additional language tracks.

VP9 and Opus are the highly efficient, open-source technologies that power WebM. VP9 is the video codec, developed by Google to deliver high-quality video at a very low data rate. Opus is the audio codec, known for its excellent, crystal-clear quality for both music and human speech, making it perfect for the web.

Both are the top standards for web video today. MP4 offers the absolute best compatibility, especially with Apple devices. WebM is completely open-source and often provides a slightly smaller file size at the same quality level. The most common professional practice is to provide both versions and let the user's web browser choose the best one to play.