turnformatWEBM
WEBM is an open video format designed for the web. Browsers play it without plugins and it's small for its quality.
Convert WEBM to MP4
Upload your files and download them converted in seconds.
Drop your files here
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Choose filesUp to 50 MB per file and 20 files at once
How to convert WEBM to MP4
This tool converts WEBM files to MP4 right in your browser. There's nothing to install and no account to create: upload the file, pick MP4 and download it.
Upload your WEBM file: drag it onto the upload area or click “Choose files”.
Check that the target format is MP4 and click “Convert”.
Download your MP4 file as soon as it's ready.
What changes when you convert WEBM to MP4
- The video is recompressed for the MP4: resolution and length are kept, but it may lose some quality.
| Feature | WEBM | MP4 |
|---|---|---|
| Moving picture | Yes | Yes |
| Sound | Yes | Yes |
About the formats
MP4
MP4 is the most compatible video format: it plays on any phone, computer, TV or website, and stays small thanks to the H.264 codec.
Frequently asked questions
Is it free to convert WEBM to MP4?
Yes. Conversion is free, you don't need an account and the result has no watermark. You can upload files of up to 50 MB.
Do I lose quality converting WEBM to MP4?
Length and, for video, resolution are kept. If the MP4 uses lossy compression, a high quality setting is used so the difference is barely noticeable.
Is it safe to upload my files?
Your files are only used for the conversion and are deleted automatically after 60 minutes. They're never shared with anyone.
Can I convert several WEBM files at once?
Yes. You can upload up to 20 files at once and convert them all with “Convert all”.
Does it work on mobile, Mac and Windows?
Yes. It works in any modern browser, on desktop and mobile, with nothing to install.