Convert WebM to MP4 Online - Free
Convert WebM videos to MP4 format online for free. MP4 is the most universally compatible video format.
Upload files
or drag and drop files here
Max file size: 500MB
Your files are processed locally in your browser. Nothing is uploaded to any server.
How to Convert WebM to MP4
Upload WebM Video
Select your WebM video file. Common for videos downloaded from the web or recorded by browsers.
Convert to MP4
Choose MP4 as output format with H.264 encoding for maximum device and platform compatibility.
Download MP4 File
Save your MP4 video. It can now be played on virtually every device, TV, phone, and media player.
Frequently Asked Questions
Why convert WebM to MP4?
MP4 is the most universally compatible video format, supported by all smartphones, smart TVs, media players, and social media platforms. WebM has limited support on Apple devices and some older systems. Converting to MP4 ensures your video plays everywhere without compatibility issues.
Can I play the converted MP4 on iPhone?
Yes, MP4 with H.264 encoding is natively supported on all iPhones, iPads, and Apple devices. After conversion, you can play the video directly in the Photos app, share it via iMessage or AirDrop, and upload it to any social media platform without additional apps.
Is there quality loss when converting WebM to MP4?
There is a small quality reduction because the video is re-encoded from one lossy codec to another. At high quality settings, this difference is barely perceptible. For best results, keep the output resolution and bitrate close to the original WebM file specifications.