Convert WebM to MP4
Drop your WebM and get MP4 back in seconds. Our AI handles the conversion — no settings, no software, nothing to learn.
Talk to your files
Anything that used to take five menus and three export dialogs is now one sentence in the chat. Watch it work:
Built for how you actually work
One assistant instead of a dozen single-purpose converter sites.
Every format in one place
Images, documents, video, audio and data — 50+ formats handled by one chat, with a dedicated page for every conversion.
Private by design
Your files are used to run your conversion and nothing else. No sharing, no training, and everything auto-deletes within 24 hours.
Seconds, not minutes
Most conversions come back before you'd have found the right export menu.
Speaks your language
The whole product — pages, assistant and answers — works in seven languages.
Nothing to install
Runs entirely in your browser, on any device. No apps, no accounts to start, no updates.
WebM vs MP4 at a glance
| WebM | MP4 | |
|---|---|---|
| Type | Video | Video |
| File extension | .webm | .mp4 |
| Compression | Depends on codec | Depends on codec |
| Support | Modern browsers and apps | Opens everywhere |
| Best for | Video embedded in web pages | Sharing and publishing video |
What is a WebM file?
WebM is the open, royalty-free video format built for the web, typically carrying VP9 or AV1 video with Opus audio. Browsers support it natively; native apps and Apple devices much less so.
What is a MP4 file?
MP4 (usually with H.264 video and AAC audio inside) is the universal video format: every phone, browser, TV and editing app plays it. It balances quality and size well, which makes it the safe choice for sharing, embedding and uploading.
Why convert WebM to MP4?
WebM plays fine in browsers but stumbles in video editors, on iPhones and in many desktop players. MP4 with H.264 plays on virtually every device and platform, making it the default for sharing and uploading video.
WebM to MP4, answered
Common questions about converting WebM to MP4.
Drop your WebM into the chat and ask to convert it to MP4. The assistant runs the conversion and gives you a MP4 to download — usually in a second or two.
Yes. You can convert WebM to MP4 for free as a guest. Signing in raises your limits and lets you convert more files per day.
No. Everything runs in your browser — there's nothing to download or set up. Just drop your WebM and go.
Your WebM is only used to run the conversion you asked for. We don't share it or use it for anything else, and it's automatically deleted from our servers within 24 hours.