Convert WEBM to MP4
WebM video → MP4 video: convert online for free. WEBM to MP4 conversion runs right in your browser — your files never leave your device.
Drop files here or choose them
You can also paste files with Ctrl+V
Files never leave your device
About the formats
- WebM video
- Open web video container with VP8/VP9/AV1 video and Opus or Vorbis audio.
- MP4 video
- Common video container, usually with H.264 video and AAC audio. Plays almost everywhere.
How to convert WEBM to MP4
- Choose a WebM video file or drag it onto the page.
- Check the settings and click Convert.
- Download the MP4 video file when it is ready.
Frequently asked questions
Is converting WEBM to MP4 free?
Yes. Conversion is free, with no sign-up and no watermarks.
Are my WEBM files uploaded anywhere?
No. The conversion runs in your browser, so your files never leave your device.
Will the quality change when converting to MP4?
Quality depends on the target format and the settings you choose; lossy formats let you adjust the quality level.