Convert WebM to MP4
Convert WebM to MP4 online for free. Simply drop your WebM files below to convert them to MP4 in seconds.
- Free Converter
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- No Uploads
Add files
Drop files anywhere on the page or paste them with Ctrl+V / ⌘+V
How to convert WebM to MP4?
Add WebM files
Drag and drop files onto the page or click the upload area. You can add several files at once.
Choose MP4 and settings
Pick the target format and, if needed, adjust quality, size and other options.
Download the result
Conversion runs right in your browser. Download files one by one or all at once as a ZIP archive.
Converting WebM to MP4: what to know
WebM comes from screen recording in the browser, some call-recording apps and videos downloaded from websites. MP4 is needed to open the video on an iPhone, in a video editor, in a messenger or on a TV.
If the codecs inside the WebM fit MP4, the tracks are copied without re-encoding, which is fast and lossless. Such an MP4 plays well in browsers, but some players and TVs don't support it: then choose the H.264 codec in the settings, and the video is re-encoded into the most compatible form.
You can also trim the recording there, for example to cut the start and end of a screen recording.
WebM or MP4: which to choose?
WebM
WebM is an open video format from Google for the web, with VP8, VP9 or AV1 video.
Best for video on websites and screen recordings.
MP4 (MPEG-4 Part 14)
MP4 is the most compatible video format: it plays on phones, TVs, browsers and social networks.
Best for publishing and sending videos - maximum compatibility at a reasonable size.
What happens when converting WebM to MP4
If the codecs inside WebM are supported by MP4, the tracks are copied without re-encoding - quickly and without quality loss. Otherwise the video is re-encoded with the codec, bitrate, resolution and frame rate you choose.
You can also trim the video, rotate or flip it and remove the sound.
WebM files up to 2 GB are supported; the actual limit also depends on the free memory of your device.
WebM and MP4 compared
Convert WebM to other formats
Convert other formats to MP4
What else you can do with WebM
Frequently asked questions
How do I convert WebM to MP4?
Add WebM files above - MP4 is already selected as the target format. Adjust the settings if needed, start the conversion and download the MP4 files.
Can I change the MP4 quality?
Yes. Set the quality from 1 to 100 in the file settings: the lower the value, the smaller the file.