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Convert videos to MP4

Turn MOV, WebM and MKV files into H.264 MP4, the video format that plays on every device.

Drop your videos here

MP4, WebM, MOV, and MKV, as many as you like. Your computer does the work, so long videos take a while.

MP4 with the H.264 codec is the most compatible video format there is: it plays in every browser, on every phone and smart TV, and in all editing and social media apps. This converter re-encodes your video to H.264 MP4 directly in your browser.

How to convert videos to MP4 (H.264)

  1. Drop your videos in the box above, or click to pick them. You can add as many as you like.
  2. MP4 (H.264) is already selected as the output format. Switch on other formats if you want them too.
  3. Optional: open Advanced Settings to resize by percentage, width or height, and add more sizes.
  4. Click Start Conversion, then download each file or all of them at once. Nothing is uploaded: the conversion runs in your browser.

Why convert videos to MP4 (H.264)?

Convert to MP4 when a video will not play, will not upload, or needs to work for everyone.

Frequently asked questions

Which videos can I convert to MP4?

Any video your browser can decode: MOV, WebM, MKV and MP4 files with common codecs such as H.264, HEVC, VP8, VP9 or AV1. Professional codecs like ProRes are not supported by browsers.

Are my videos uploaded?

No. The video is decoded and encoded in your browser, on your device. Nothing is sent to a server, which also means there is no file size limit other than your device memory.

Can I resize the video while converting it?

Yes. Open Advanced Settings and turn on Resize to scale the video by percentage, width or height. You can add more sizes to get several versions in one go.