Convert WMV to MP4
Convert WMV files to MP4 in seconds. Free, no upload, no watermark. Trim, compress or edit before you convert.
or drag & drop videos, audio or images here, or paste with Ctrl+V
MP4 · MOV · MKV · AVI · WebM · WMV · FLV · GIF · MP3 · WAV · M4A · and 40+ more
- Files never leave your device
- No sign-up, no watermark
- Free forever
How to convert WMV to MP4
- Add your WMV fileClick “Choose files” or drag & drop your WMV file onto the page.
- Check the outputMP4 is pre-selected. Optionally trim, crop, compress or tweak quality in the tabs.
- Convert & downloadClick “Convert & download”. Your MP4 file is created on your device and saved instantly.
WMV vs MP4
Short answer: MP4 is the most widely supported video format. It plays on virtually every phone, browser, TV and editing app, and offers an excellent balance between quality and file size.
What is WMV?
WMV is Microsoft's Windows Media Video format, used by Windows Media Player and older PowerPoint presentations.
What is MP4?
MP4 is the most widely supported video format. It plays on virtually every phone, browser, TV and editing app, and offers an excellent balance between quality and file size.
Quality
If the video and audio codecs inside your WMV file are already compatible with MP4, we copy them without re-encoding: it's instant and lossless. Otherwise we re-encode with a high-quality setting (adjustable with the Quality slider).
| WMV | MP4 | |
|---|---|---|
| Full name | Windows Media Video | MPEG-4 Part 14 |
| Type | video | video |
| Best for | Windows Media Player and older Windows software | Sharing, social media, websites and playback on any device |
| MIME type | video/x-ms-wmv | video/mp4 |
Last updated 2026-11-13
WMV to MP4: FAQ
Is this WMV to MP4 converter free?
Yes. Converting WMV to MP4 is completely free with no watermark, no sign-up and no file limits beyond what your device can handle. Optional Pro features like 4K export and AI subtitles are available if you need them, and a single 4K export can be unlocked without a subscription.
Are my WMV files uploaded to a server?
No, never. The conversion runs entirely in your web browser using FFmpeg compiled to WebAssembly. Your WMV file never leaves your computer or phone, and we never store it, which makes it private and fast.
Will I lose quality converting WMV to MP4?
If the video and audio codecs inside your WMV file are already compatible with MP4, we copy them without re-encoding: it's instant and lossless. Otherwise we re-encode with a high-quality setting (adjustable with the Quality slider).
How do I convert WMV to MP4 on iPhone or Android?
Open this page in Safari or Chrome on your phone, tap “Choose files”, pick your WMV file and tap “Convert & download”. No app install needed.
Can I convert multiple WMV files to MP4 at once?
Yes. Select several files and click “Convert all”. You can download them one by one or as a ZIP. Free users can batch-convert up to 5 files at a time; Pro removes the limit.
Can I edit the WMV before converting?
Yes: trim, cut, crop, rotate, resize, change speed, adjust colour, add text, music or subtitles, and more, all before you export to MP4.