WebM to MP4 converter

Convert WebM video to MP4 right in your browser — no upload, no sign-up, completely free. Drop your file and download the result in seconds. Everything is processed on your own device and never sent to a server.

WebM (VP9/AV1) is an open, royalty-free video format built for the web. It often produces smaller files than MP4 at the same quality and is supported by all modern browsers. MP4 (H.264/H.265) is the most universally compatible video format. It plays on virtually every device, app and platform, which makes it the safe default for sharing. MP4 plays on virtually every device, app and social platform, which makes it the safest format to share.

How to convert WebM to MP4

1. Add your WebM video. Drag your WebM file onto the drop zone or click to browse.
2. Convert. Your video is converted to MP4 on your device. Larger files take a little longer.
3. Download your MP4 file. Save the converted MP4 video straight to your device.

Features

• Private by default. Your video is converted in the browser and never uploaded.
• Plays everywhere. MP4 is widely supported, so the result plays where you need it.
• No watermark. The converted file is clean — no logo or watermark added.
• Free to use. No sign-up and no cost.

When to use it

• Convert WebM to MP4 for a device or platform that won’t play WebM.
• Make WebM footage easier to share by converting it to MP4.
• Prepare video for maximum compatibility across phones, social media and the web.
• Convert a clip from your phone or camera without installing any software.