Click the «Choose files» button and select the WEBM files you want to convert to MKV.
Select «MKV» as the target format. Click «Convert» to start converting WEBM to MKV. It only takes a few seconds.
Done! Your WEBM file has been converted to MKV format. You can download it to your device.
WebM is a video file format. It has a sister, WebP project for images. Google sponsors the development of the format, and the corresponding software is distributed under a BSD license. The WebM container is based on a profile of Matroska.
MKV (Matroska) is an open standard free container format that can hold unlimited video, audio, picture, or subtitle tracks in one file. It is intended to serve as a universal format for storing common multimedia content, like movies or TV shows.
| 🔁 Conversion | WEBM to MKV |
| ⏱ Time to convert | 20 seconds |
| 💳 Cost | Free |
| 📂 File types | Video |
| ✳️ File extensions | .webm, .mkv |
| 📏 File size limit | 75 MB |
| 👩💻 Supported OS | Windows, Linux, MacOS, iOS, Android |
You don't need to download and install any software to convert .webm files to .mkv format. All conversions take place in the cloud.
Your files are completely safe and accessible only to you. All files will be permanently deleted within 2 hours after conversion.
Convert your webm files to mkv in 2 clicks. And don't pay anything for it! Our WEBM to MKV Converter is free for all users.