ConvertMKV to WEBM
Free Online Media Converter
Convert your MKV to WEBM in seconds. 100% free, secure, and works directly in your browser, no software to install, no account required.
Convert In Just 3 Easy Steps
Our lightning-fast converter works with all major formats. Just upload and go.
Upload
Drag & drop your MKV file or select one from your device.
Convert
Sit back as our high-speed tool converts your video.
Download
Instantly grab your new WEBM file—ready for sharing or editing.
What is MKV
MKV (Matroska Video) is a versatile, open-source container format that supports multiple video, audio, and subtitle tracks in a single file. Popular among enthusiasts for 4K movies, Blu-ray rips, and multi-language content, MKV preserves high-quality video with codecs like H.265 and audio formats like FLAC. Though not as widely supported as MP4, it's the best choice for advanced media storage and playback.
What is WEBM
A WebM file is a modern, royalty-free multimedia format optimized for web use. Developed by Google, it uses efficient VP8 or VP9 video compression alongside Vorbis or Opus audio codecs. WebM is perfect for HTML5 video streaming, offering excellent quality with smaller file sizes compared to MP4. It's widely supported in browsers like Chrome, Firefox, and Edge, making it a top choice for web developers and content creators.
Need a different format?
We support a wide range of video, audio and image formats.
Check out the full list and start converting.
