Convert WMV to MKV

Transform your microsoft windows video format into MKV format. Free, private, and browser-based.

How it works

  1. Upload WMV Files — Drag and drop your WMV files into the converter, or click to browse. Common sources: windows movie maker, legacy windows apps.
  2. Convert to MKV — The converter processes your files to MKV format entirely in your browser. No files are uploaded to any server — your privacy is guaranteed.
  3. Download Results — Download your converted MKV files instantly. For multiple files, download individually or as a ZIP archive.

Why convert WMV to MKV

  • Make WMV files accessible on macOS, Linux, and mobile devices
  • Convert to lossless MKV format to prevent further quality degradation during editing
  • Leverage MKV advantages: supports multiple audio/subtitle tracks
  • Overcome WMV limitations: no cross-platform playback

FAQ

Is WMV to MKV conversion free?
Yes, Fileza.io converts WMV to MKV completely free with no limits on file size or number of conversions. No hidden fees, no watermarks, and no account required.

Will I lose quality converting WMV to MKV?
Both WMV and MKV use lossy compression. Output quality is excellent at high quality settings (85%+) — most people cannot see any difference.

Is it safe to convert WMV to MKV online?
Absolutely. Unlike most online converters, Fileza.io processes your files entirely in your browser using WebAssembly. Your WMV files are never uploaded to any server — the conversion runs on your own device, keeping your files 100% private.

Can I convert multiple WMV files to MKV at once?
Yes, Fileza.io supports batch conversion. Drag and drop multiple WMV files at once and they will all be converted to MKV simultaneously. Download them individually or as a ZIP archive.

Does WMV to MKV conversion work on mobile?
Yes, the converter works on any device with a modern web browser — iPhones, iPads, Android phones, and tablets. No app installation required.

Will the converted MKV files be smaller or larger than WMV?
File sizes depend on content and quality settings. WMV files are typically small to medium, while MKV files are varies by codec.

How long does WMV to MKV conversion take?
Most conversions complete in seconds. The exact time depends on file size and your device performance. Since processing happens locally in your browser, faster devices convert more quickly. Video files may take longer due to re-encoding.