WebM to MKV Converter

How to Convert WebM to MKV (Step-by-Step)

1. 1

   Select or Drag your File

   Click the "Choose Files" button to browse your folders, or simply drag and drop your WebM file directly onto this page.

2. 2

   Choose MKV as Output

   Verify that your target format is set to MKV.

3. 3

   Local Conversion

   Click "Convert." Your file is processed entirely in your browser's memory—no data is uploaded to our servers.

4. 4

   Instant Save

   Once finished, your MKV file will be ready for immediate save.

Pro-Tip: You can drag multiple files at once if you are doing a batch conversion!