MP4 Converter

Turn MOV, MKV, AVI, WEBM, WMV and any other video into MP4 that plays everywhere. You can also convert MP4 to other formats.

How to use the MP4 converter

  1. Choose your video. Any format works.
  2. Keep "MP4" selected, or pick another format if you are converting an MP4.
  3. Leave "Play everywhere" ticked so the video becomes H.264, the most compatible codec.
  4. Convert and download.

Why MP4?

MP4 with H.264 video and AAC sound is the closest thing video has to a universal format. iPhone, Android, Windows, Mac, smart TVs, YouTube, Instagram, TikTok, WhatsApp and email all accept it. If a video will not play or upload somewhere, converting it to MP4 is usually the fix.

Converting an MP4

Drop an MP4 and the converter automatically suggests MP3, since that is what most people want from an MP4. Choose any other format in the list, such as MOV, MKV, WEBM, AVI or WAV.

Good to know

Video is encoded with H.264 (x264) and AAC unless the format needs something else, and audio uses each format's standard encoder (LAME for MP3, native AAC, Vorbis, Opus, FLAC). When the codecs already match, streams are copied instead of re-encoded.

Supported files

Any common audio or video file: MP4, MOV, MKV, WEBM, AVI and other video formats, and MP3, WAV, M4A, FLAC, OGG, OPUS, WMA and other audio formats. Files up to 1 GB each.

Frequently asked questions

Will converting to MP4 reduce quality?

If the video is already H.264 it is copied without any change. Otherwise it is re-encoded at "Balanced" quality, which looks the same as the source to most people. Pick "High" for important footage.

What is the difference between MP4 and H.264?

MP4 is the file container; H.264 is the video codec inside it. An MP4 can also hold HEVC (H.265), which some devices cannot play. "Play everywhere" makes sure the MP4 uses H.264.

Is the MP4 Converter free?

Yes, completely free, with no sign-up and no watermark. Files up to 1 GB each can be converted, and there is no daily limit.

Are my files safe?

Yes. Files are converted locally in your browser and are never uploaded. When you close the page, nothing is left behind.

Does it work on iPhone and Android?

Yes, in Safari, Chrome and other modern mobile browsers. Short files work best on phones; for long or high-resolution videos a computer is faster.

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