WebM to MP4 Converter
Convert WebM videos to MP4 format instantly in your browser. Perfect for making screen recordings and web videos compatible with any device.
Drop files here or click to browse
Max 10240.0 MB per file · drop multiple for batch
100% private — files never leave your device
·Free — no sign up, no watermark
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How to Use WebM to MP4 Converter
- Upload your WebM video file — drag and drop or click Browse
- MP4 is pre-selected as the output format
- Click Process to convert VP8/VP9 to H.264
- Download the universally compatible MP4 file
Features
- Convert VP8/VP9 WebM to H.264 MP4 for universal playback
- Perfect for screen recordings from Chrome, Firefox, and OBS
- Adjustable quality presets — fast, balanced, or high fidelity
- Optional resolution downscaling to 1080p, 720p, or 480p
- 100% client-side — no data sent to any server
- Free and unlimited with no watermarks
Frequently Asked Questions
- Why convert WebM to MP4?
- WebM is a web-optimized format but many video editors, phones, and social media platforms don't support it. MP4 with H.264 is universally compatible across all devices and platforms.
- Can I convert screen recordings from Chrome?
- Yes. Chrome and other browsers often save screen recordings as WebM. This tool converts them to MP4 for editing in any video editor or sharing on social media.
- Will the conversion affect video quality?
- With the High quality preset, the quality difference is negligible. VP9 and H.264 are both efficient codecs, so the conversion preserves visual fidelity.
- How large can the WebM file be?
- Files up to 2 GB are supported. Since everything runs in your browser, conversion speed depends on your device's processing power.
- Can I convert WebM files with audio?
- Yes. Both video and audio tracks are converted. WebM audio (Opus/Vorbis) is re-encoded to AAC for MP4 compatibility.