Audio · Video tool
Video Converter
Convert videos between MP4, MOV, WebM and MKV using your device's hardware encoder. Runs in your browser; videos are never uploaded.
Free｜No sign-up｜Files stay on your device
Drop video files here, or click to choose
Files are processed on your device and never uploaded
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Support us／Ko-fiAbout Video Converter
iPhone videos are MOV, screen recordings are often WebM, and many sites and editors only accept MP4. This converter switches formats in your browser using the same hardware encoder your device uses for recording.
Nothing is uploaded, so even long or private videos stay on your device.
Great for
- ・iPhone MOV to MP4 for Windows or uploads
- ・WebM screen recordings to MP4
- ・MKV videos for phones and TVs
How to use
- 01Pick the output format (MP4, WebM, MOV or MKV) and quality.
- 02Drop one or more videos.
- 03Wait for the progress bar, then download.
Why use it
Private by design
Everything runs locally in your browser. Nothing passes through a server.
Instant
No software to download and no account to create.
Works everywhere
Desktop, phone, or tablet — any modern browser.
Free forever
No watermarks and no usage limits.
Frequently asked questions
Which formats can I convert?
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Input: MP4, MOV, WebM, MKV and other videos your browser can read. Output: MP4 (H.264), WebM (VP9), MOV and MKV.
How fast is it?
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It uses your device's hardware video encoder through the browser (WebCodecs), so short clips usually convert in seconds. Long or 4K videos take longer and need more memory.
Is there a size limit?
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No fixed limit, but the result is kept in memory. On phones, files under about 1 GB work best.
Is this tool free? Do I need an account?
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It's completely free. There's no sign-up, no login and no usage limit.
Are my files and data safe?
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Everything is processed inside your browser. Your files are never uploaded to our servers and disappear when you close the page.
Does it work on my phone?
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Yes. The page is fully responsive and works in current versions of Chrome, Safari and Edge on iPhone, Android and tablets.
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