MKV to WEBM Converter

Batch convert mkv files to webm format online for free

Choose files or drag & drop them here.
Only you have access to your files.
All files will be deleted after one hour.

How to convert MKV files to WEBM online?

Step-by-step guide to convert mkv to webm using AnyConv. It works on PC (Windows, Mac, Linux) and mobile devices (iPhone, Android).

Upload MKV-file

Drag and drop your MKV file into the upload area. The maximum file size is 100 MB.


Click "Convert" to change mkv to webm. The conversion usually takes a few seconds.

Download your WEBM

Now you can download the WEBM file. The download link only works on your device.


  • ❓ How can I convert files from MKV to WEBM?
    First you need to add file for conversion: drag and drop your MKV file or click the "Choose File" button. Then click the "Convert" button. When MKV to WEBM conversion is completed, you can download your WEBM file.
  • ⏱️ How long does it take to convert MKV to WEBM?
    Video conversion takes quite a while. It will probably take you a few minutes to change MKV to WEBM.
  • 🛡️ Is it safe to convert MKV to WEBM on AnyConv?
    Of course! We delete uploaded files immediately, and converted ones after 1 hour. No one has access to your files. File conversion (including MKV to WEBM) is absolutely safe.
  • 💻 Can I convert MKV to WEBM on Mac OS or Linux?
    Yes, you can use AnyConv on any operating system that has a web browser. Our MKV to WEBM converter works online and does not require software installation.

Information about MKV and WEBM file formats

🔸 File format MKV WEBM
🔸 Full name MKV - Matroska WEBM - HTML5 video
🔸 File extension .mkv, .mk3d, .mka, .mks .webm
🔸 MIME type video/x-matroska, audio/x-matroska video/webm, audio/webm
🔸 Developed by Google
🔸 Type of format Container format video file format
🔸 Description The Matroska Multimedia Container is an open standard free container format, a file format that can hold an unlimited number of 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. WebM is a video file format. It is primarily intended to offer a royalty-free alternative to use in the HTML5 video tag. It has a sister project, WebP, for images. Google sponsors the development of the format, and the corresponding software is distributed under a BSD license.
🔸 Technical details Matroska is similar in concept to other containers like AVI, MP4, or Advanced Systems Format (ASF) but is entirely open in specification, with implementations consisting mostly of open-source software. The WebM container is based on a profile of Matroska. WebM initially supported VP8 video and Vorbis audio streams. In 2013 it was updated to accommodate VP9 video and Opus audio.
🔸 File conversion MKV conversion WEBM conversion
🔸 Associated programs VLC Media Player VLC media player, MPlayer, K-Multimedia Player, Mozilla Firefox, Opera, Google Chrome, FFmpeg.
🔸 Wiki
MKV to WEBM Conversion Quality Rating
4.1 (287 votes)
Convert and download at least one file to rate.