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WMV to MP4 Converter

Convert WMV video to MP4 for universal playback. Free, private, browser-based conversion.

  • No signup
  • Private
  • Fast

  • Super Fast

    Convert in seconds on desktop and mobile.

  • 100% Private

    Files never leave your device.

  • Secure

    Browser-side processing only.

  • Universal MP4 output

    Plays on virtually every device and platform.

Why use this tool?

WMV is common on older Windows libraries but poorly supported on phones and Macs. MP4 plays everywhere.

How to convert WMV to MP4

  1. Step 1: Upload your WMV video

    Choose a WMV video from your device or drag it into the upload area. Files up to 100 MB are supported.

  2. Step 2: Convert in your browser

    We convert the video to MP4 locally using FFmpeg in your browser — nothing is uploaded to our servers.

  3. Step 3: Download your MP4

    Preview the result and download the converted file with one click.

Supported formats

  • Input: WMV (.wmv) up to 100 MB
  • Output: MP4

Frequently asked questions

Is this WMV to MP4 converter free?

Yes. Convert WMV to MP4 online for free — no account, no watermark, and no limits on how many files you convert.

Are my files uploaded to your servers?

No. Conversion runs entirely in your browser with FFmpeg WebAssembly. Your files never leave your device.

What is the maximum file size?

You can convert WMV videos up to 100 MB per file. Longer or higher-resolution clips may be slow or fail on low-memory devices — try shorter clips if conversion times out.

Why does the first conversion take longer?

The first run downloads the FFmpeg engine into your browser (one time per session). Later conversions on the same page are faster.