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Convert your WEBM files online—no registration needed. No matter your platform—Windows, Linux, or macOS—you can convert your WEBM documents rapidly. Drag and drop your file onto the upload form, pick the output format you need, and hit the convert button. After the conversion is finished, download your MKV file instantly.
Conversion time varies based on the WEBM file's size and complexity, but most files convert within seconds. Our advanced options include converting secured documents and delivering conversion results straight to your inbox.
Easily convert your WEBM documents from any location and any device, even on mobile. This conversion app is always accessible online and free for basic use.
Check our videoWEBM is an open, royalty-free multimedia container format designed for web use, primarily for video and audio streaming. It is widely supported by modern web browsers, media players like VLC, and editing tools such as Adobe Premiere Pro and FFmpeg. The format uses VP8 or VP9 video codecs and Opus or Vorbis audio codecs, offering efficient compression, high-quality playback, and features like adaptive streaming and metadata support.
MKV (Matroska Video File) is an open, flexible multimedia container format designed to store video, audio, subtitles, and metadata in a single file. It is widely supported by media players like VLC, MPC-HC, and tools such as MKVToolNix for editing and muxing. The format uses EBML (Extensible Binary Meta Language) for its structure, enabling advanced features like chapter support, multiple audio tracks, and seamless streaming capabilities.
You can also convert WEBM into many other file formats. Please see the complete list below.