WebM is an open, web-friendly format, but it won't open on an iPhone or in many editing apps. MP4 fixes that. This free WebM to MP4 converter gives you a compatible file you can edit, post and share anywhere, in just a few seconds.
Upload your WebM file
Click “Convert to MP4” and let it process
Download your new MP4 — ready to share or edit
Upload your WebM file, click “Convert to MP4”, and download the result. It happens in your browser in seconds — no software needed.
Yes, it's completely free. There's no watermark and no sign-up required to convert your WebM to MP4.
No — the converter preserves your video's quality while changing the format to MP4, which is widely supported across devices and apps.
Your file is only used to perform the conversion and is never shared. For sensitive content, you stay in control the whole time.
Free, fast tools to compress, convert, trim and clean up your videos — no sign-up.