UtilSlateSearch toolsCtrl K

Video Converter

Convert videos between MP4, WebM, MOV and MKV.

Convert to

Plays on every phone, computer and website.

Picture and sound

Picture and sound are copied as they are when the new format allows it (fast, nothing lost). This converts only what older devices can’t play, such as Dolby Digital sound.

MP4, MOV, WebM, MKV and 3GP, several at once, and AVI

Drop more files anywhere on this page, or

    Runs on your device. No upload wait.

    What you get

    • MP4, WebM, MOV, MKV
    • No needless re-encoding

    Questions

    Which format should I choose?

    MP4 plays everywhere and is what phones, social networks and editors expect. WebM is for websites. MOV suits Apple’s editors. MKV can hold anything, including several sound and subtitle tracks, and suits VLC and media servers.

    Why was my video converted in seconds?

    A video file is a container holding compressed picture and sound. When the new container can hold the same compression (H.264 in MOV and MP4, for example), they are copied across untouched. Nothing is lost and nothing needs re-encoding.

    What does “plays everywhere” change?

    It converts only the parts older devices can’t play: VP9 or AV1 picture into H.264 for MP4, and sound like Dolby Digital (AC-3) or Opus into AAC. Turn it off to keep everything exactly as it is.

    Is there a size limit?

    Up to 4 GB per video on a computer (1 GB on a phone). Files are read in pieces and the result is written to your browser’s own storage, so even long videos work; they just take longer.

    Are my videos uploaded anywhere?

    No. Your videos are opened and processed on your device, and the results are saved straight back to it. Nothing is uploaded. How to check.

    Is it free? Do I need an account?

    It is free to use and there is nothing to sign up for. There are no watermarks and no daily limits.

    Missing something, or not working as it should? Tell us