Convert WebM to MP4 — Free & Private
Transform your WebM files to MP4 format instantly. 100% private, works on any device.
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About WebM to MP4 Conversion
Transcode your video files for maximum compatibility. Different platforms and devices require different formats—we help you convert seamlessly between them while maintaining visual quality and audio synchronization.
How to Convert WebM to MP4
Converting files has never been easier or more secure. MixConvert uses advanced browser-based technology to process your files instantly without uploading them to a remote server. Follow these simple steps to get started:
- Select Your Files: Select your WebM files by clicking the upload zone or dragging them directly onto the page.
- Choose Output Format: Confirm MP4 is set as the destination format in the format selector.
- Convert Instantly: Click the convert button to begin. Your WebM files will be processed locally in seconds.
- Download: Save your new MP4 files directly to your device. Batch download available for multiple files.
WebM to MP4 FAQ
Can I convert WebM to MP4 on mobile devices?
Absolutely! Our converter is fully responsive and works on any smartphone or tablet. Just visit this page, upload your WebM files, and convert them to MP4 format—no app required.
Is my data secure when converting WebM files?
100% secure. Unlike cloud converters, MixConvert processes your WebM files entirely on your device using WebAssembly. Your data stays on your computer—we never see it.
How large can my WebM files be?
We don't impose file size restrictions. Your browser handles the conversion, so the limit depends on your device's memory. Typical computers can process very large WebM files without issues.
What's the conversion speed for WebM files?
Conversion is nearly instant for typical WebM files. Your device's processor handles the work, so faster devices complete MP4 conversion more quickly.
Does MixConvert support converting multiple WebM files at once?
Batch conversion is fully supported. Upload as many WebM files as you need and convert them all to MP4 in one go. A ZIP download option makes it easy to save everything.
What codec is used for MP4 output?
MP4 output uses widely-compatible, efficient codecs. Our converter balances quality and file size, though you can expect excellent visual results from your converted videos.
Understanding the Formats
WebM
Web Media
Open-source video format designed specifically for web use. Excellent compression with HTML5 native support.
MP4
MPEG-4 Part 14
The universal video format supported by virtually all devices and platforms. The go-to choice for video distribution.
Reverse Conversion
MP4WebMMore WebM Conversions
Convert WebM to other formats