Convert WMV to WEBM online in seconds — free, with no sign-up. WEBM is lossy and ideal for efficient web video in Chrome, Firefox and Edge. Your files are encrypted and deleted automatically after 24 hours.
WMV
Windows Media Video — A Microsoft format with limited support outside Windows.
WEBM
WebM — A royalty-free web video format (VP8/VP9) that's smaller than H.264 at equal quality.
How to convert WMV to WEBM
- 1Upload your WMV file
Click “Choose a file” or drag and drop your WMV file onto the page — no sign-up or email needed.
- 2Convert to WEBM
WEBM is already selected as the output. Open Options to fine-tune quality if you like, then click Convert.
- 3Download your WEBM file
Your WEBM file is ready in seconds — click Download to save it. Files are automatically deleted after 24 hours.
WMV vs WEBM
| WMV | WEBM | |
|---|---|---|
| Full name | Windows Media Video | WebM |
| Type | Video | Video |
| Compression | Lossy | Lossy |
| Best for | legacy Windows video; converted to MP4 for sharing | efficient web video in Chrome, Firefox and Edge |
Frequently asked questions
Does converting WMV to WEBM lose quality?
Both WMV and WEBM use compression, so re-encoding discards a little more data. For a single conversion the change is virtually invisible; just avoid repeatedly re-converting the same file.
What's the difference between WMV and WEBM?
Windows Media Video (WMV) is lossy and best for legacy Windows video; converted to MP4 for sharing. WebM (WEBM) is lossy and best for efficient web video in Chrome, Firefox and Edge. Convert WMV to WEBM when you need a video for efficient web video in Chrome.
Is the WMV to WEBM converter free?
Yes — converting WMV to WEBM is completely free. There's no watermark, no sign-up and no email required, and you can convert as many files as you like.
Are my WMV files private and secure?
Yes. Your uploads are encrypted in transit, processed privately, and automatically deleted within 24 hours. We never share, sell or look at your files.
Can I convert WMV to WEBM on iPhone, Android, Mac or Windows?
Yes. The converter runs entirely in your browser, so it works on any device — iPhone, iPad, Android, Mac, Windows or Linux — with nothing to download or install.
How long does it take to convert WMV to WEBM?
Most files convert in a few seconds. Larger files take a little longer, and your upload speed is usually the limiting factor. There's no queue and no waiting for an email.
What else can I convert WMV files to?
Besides WEBM, you can convert WMV to AAC, AVI, FLAC, FLV, GIF, JPG and more — see the full list of WMV conversions below.
Other conversions
Last updated July 2026