Convert WebM to MP4
Free and instant — your WebM files are processed securely on our servers and deleted right after conversion. Nothing is stored.
How to convert WebM to MP4
- Step 01
Add your WebM files
Drop them into the box above or click to browse. You can add several files at once.
- Step 02
Conversion starts instantly
Your file is sent to our servers, converted and deleted right away — no sign-up, no queue, no waiting.
- Step 03
Download your MP4 files
Save each file individually or grab them all at once. Done.
Why convert WebM to MP4?
WebM plays in browsers but not in many desktop apps, phones or smart TVs. Converting to MP4 gives you universal compatibility while keeping the same visual quality.
WebM vs MP4 at a glance
WebM is the open web video format — smaller than MP4 at the same quality, royalty-free and supported by every modern browser. MP4 is the universal video format — plays on every device, browser and platform without extra codecs.
| Property | WebM | MP4 |
|---|---|---|
| Extension | .webm | .mp4 |
| Full name | WebM Video | MPEG-4 Part 14 |
| First released | 2010 | 2001 |
| Developed by | ISO/IEC JTC 1 | |
| Compression | Lossy | Lossy |
| Transparency | No | No |
| Animation | No | No |
| Best for | web video — open format supported natively by all browsers | video sharing, streaming and playback on any device |
WebM to MP4 — frequently asked questions
Is this WebM to MP4 converter really free?
Yes — completely free, with no sign-up, no watermarks and no daily limits.
Will I lose quality converting to MP4?
MP4 uses lossy compression, so the image is re-encoded at high quality (92%). For photos the difference is practically invisible; for text-heavy graphics or logos, a lossless format like PNG preserves sharp edges better.
Is the conversion private?
Video conversion runs on our servers with ffmpeg — your file is deleted immediately and never stored.
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