Convert WMV to MP4
The Windows-only format, set free — converted privately on your own machine.
Drop your video or audio here
or
MP4, MOV, WebM, MKV, AVI, MP3, WAV and more — any size, no upload
🔒 Files never leave your device — everything runs in your browser.
WMV was what Windows Movie Maker, PowerPoint exports, and a decade of Windows PCs produced by default. Outside that world it has always been awkward: iPhones and Macs need extra apps, smart TVs shrug, and web platforms often reject it outright. Converting to MP4 (H.264 + AAC) ends the compatibility argument for good.
ConvertUno includes a software decoder for the Windows Media codec family (WMV1/WMV2/WMV3), so the whole conversion happens on your device — nothing is uploaded. That matters for the things WMVs tend to hold: old family compilations, work presentations, school projects from a machine long since retired.
How it works
- Drop your file
Any common format, any size. Nothing is uploaded — the tool runs in your browser.
- Convert
Compatible files are repackaged instantly with zero quality loss; others are hardware-transcoded at high quality.
- Download
Your converted file is ready on your device — nothing to wait for, nothing to delete from a server.
Frequently asked questions
Do I need Windows or extra codecs for this?
No. The decoder ships with the tool and runs inside your browser on any operating system — converting WMV on a Mac or Chromebook works exactly the same as on a Windows PC.
Will PowerPoint-exported videos convert?
Yes — presentations exported as WMV convert like any other file, and the MP4 output drops into modern PowerPoint, Google Slides, or any video editor without complaint.
Is the quality preserved?
The re-encode targets visual faithfulness, and since the Windows Media codecs are far less efficient than H.264, the MP4 usually matches the original picture at a noticeably smaller size.
Is my file uploaded to a server?
No. ConvertUno runs entirely in your browser on your own device. Your file never leaves your computer or phone — there is no upload at all.
Is it really free, with no watermark?
Yes. Processing happens on your device, so serving you costs us almost nothing — no watermark, no account, no file-size limit, no daily quota.