How to convert WebM to MP4
Drop your WebM files into the box at the top of the page, or click it to browse your files. The converter makes a copy of each one in MP4 format. The conversion runs in your browser, so your videos never leave your device.
You can also choose a quality level, scale the video down to a lower resolution, and remove the audio.
Converting WebM to MP4
WebM is typically used for videos on websites, where smaller files load faster, while MP4 is used for sharing and uploading video, because it plays almost everywhere.
What changes when I convert WebM to MP4?
The converter re-encodes the video, which costs a small amount of detail. Choose High quality for less loss and a larger file, or Small for the opposite.
The MP4 file uses H.264 video and AAC audio when your browser can create them, so it plays on nearly every device.
What are the limits when converting WebM to MP4?
You can convert up to 10 videos a day for free, each up to 1 GB and 10 minutes long, at up to 1080p. Pro removes the daily limit and accepts videos up to 2 GB and 60 minutes long, with no resolution cap. See the plans.
Understanding WebM
WebM is an open video format made for the web. It usually makes smaller files than MP4 at the same quality, and it plays in all modern browsers.
Understanding MP4
MP4 is the most widely supported video format. It plays on phones, computers, TVs, browsers and social media sites, usually with H.264 video and AAC audio.