justyourvideoWebM to MP4 Converter
WebM or any other video to MP4, right in your browser.
- 100% Free
- No Sign Up
- Works in Your Browser
WebM to MP4
Turn WebM or any other video into MP4
Drag & drop videos
or click to browse. You can also paste.
MP4, MOV, WebM, MKV, up to 4 GB. 10 at a time.
Total-
Processed on your device. Nothing is uploaded.
More Video Tools
View all tools- Convert videoConvert between MP4, WebM, MOV and MKV
- MOV to MP4Turn MOV or any other video into MP4
- MKV to MP4Turn MKV or any other video into MP4
- MP4 to WebMTurn MP4 or any other video into WebM
- Compress videoMake video files smaller to share or upload
- Trim videoCut the start and end off a video
- Video to MP3Extract the sound from a video as MP3
- Video to GIFTurn a clip of a video into an animated GIF
- Crop videoCut away the edges of the picture
- Files uploaded
- 0
- Free to use
- 100%
- Per file
- 4 GB
How to convert WebM to MP4
Three steps, all in your browser.
- 1
Add your videos
Drop, choose or paste one or more videos.
- 2
Adjust settings
Choose the format. Streams are copied when they fit.
- 3
Download
Save each file, or all of them as a ZIP.
WebM to MP4 Converter: what to know
WebM is an open video format built for the web, typically VP8 or VP9 video with Opus or Vorbis audio. Screen recorders and browsers save WebM by default, but many editors, phones and social apps don't open it.
Converting to MP4 re-encodes the VP9 or VP8 video as H.264 and the Opus audio as AAC, the pairing that plays nearly everywhere. Everything happens on your device, so even long recordings never leave it.
Popular uses
- Screen recordings from browser tools
- Clips downloaded from websites in WebM
- Videos for iPhone users and older players
- Importing into video editors
Tips for the best result
- Recordings with mostly still screens convert quickly and come out small.
- If you only need it to play on a website, WebM is already a good choice; no conversion needed.
Read how JustYourVideo processes videos and our privacy details. Your videos are processed on your device and never uploaded. Keep your originals and check each result before replacing anything.