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Video Converter: MP4, WebM & More

Convert videos to MP4 or WebM right in your browser. Open MOV, MKV, WebM or MP4 files, choose the output format and quality, and download the converted video without uploading it anywhere.

  • To MP4 or WebM
  • Opens MOV, MKV & more
  • Never uploaded
Drop a video here or click to choose MP4, WebM, MOV, MKV, OGV and any format your browser can play · processed on your device

How to use the Video Converter tool

  1. Add your videoDrop a video onto the box or click to choose it. If your browser can play it, it can be converted.
  2. Choose the formatPick MP4 or WebM and the quality you want.
  3. ConvertClick “Convert & download”. The video is re-encoded on your device in real time.
  4. DownloadThe converted video downloads automatically and can be previewed on the page.

Features

  • Most common outputsMP4 (H.264) for the widest compatibility, and WebM (VP8/VP9) for the web and Android.
  • Many inputsMP4, WebM, MOV, MKV, OGV and other formats your browser can decode.
  • Quality controlChoose High, Standard or a smaller file.
  • Fix playback problemsRe-encoding can make videos that won’t play on some devices or websites work again.
  • Private by designConversion happens in your browser. No upload and no watermark.

MP4 vs WebM: which should I choose?

FormatBest forPlays on
MP4 (H.264 + AAC)Sharing, phones, TVs, editing apps, WhatsApp, social mediaPractically everything, including iPhone and Windows
WebM (VP8/VP9 + Opus)Websites, Android, open-source workflowsAll modern browsers, Android, VLC; limited on some older devices

If you are not sure, choose MP4.

Which formats can I convert?

The converter uses your browser’s own video engine, so it can open any file your browser can play. In Chrome and Edge that includes MP4, WebM, most MOV files and many MKV files. Older formats such as AVI, WMV and FLV, and some HEVC (H.265) videos, may not open in every browser.

Which output formats are available depends on your browser too: Chrome and Edge can create both MP4 and WebM, Safari creates MP4 and Firefox creates WebM. The options you see are the ones your browser supports.

How it works

Your browser plays the video and records it into the new format on your device. There is no upload, which keeps private videos private and saves time on slow connections, but conversion runs in real time: a 5-minute video takes about 5 minutes. Keep the tab open until it finishes.

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Frequently asked questions

How do I convert MOV to MP4?
Open the MOV file here, choose MP4 and click “Convert & download”. This works in browsers that can play the MOV file, such as Chrome, Edge and Safari.
Why don’t I see the MP4 option?
Your browser can’t create MP4 files. Firefox, for example, only creates WebM. Use Chrome, Edge or Safari for MP4 output.
Can it convert AVI or WMV?
Only if your browser can play the file. Most browsers can’t play AVI or WMV, so those usually won’t open.
Does converting reduce quality?
The video is re-encoded. At High or Standard quality the difference is very hard to see.
Is my video uploaded?
No. Conversion happens in your browser and the file never leaves your device.