Converter//API

Convert

Convert MKV to WebM

Matroska video container for high-quality rips. VP9 video with Opus audio for the web.

  • Free to use — no account or signup required.
  • Your file is deleted the moment the conversion finishes.
  • Handles large files — up to 1 GB per conversion.
  • Prefer code? The same conversion is one API call away.

Related conversions

AVI → WebMFLV → WebMGIF → WebMMKV → FLACMKV → M4AMKV → MOV
io bay · MKV → WebM
Input · MKV

Idle

Questions

faq

How do I convert MKV to WebM?

Upload or paste your MKV file, press Convert, and download the WebM result. It's free and no account is required.

Is my file kept after conversion?

No. Your uploaded file is deleted the moment the conversion finishes, and the converted output expires shortly after.

Can I run this conversion over an API?

Yes. The same MKV to WebM conversion is available as a REST API.