WebM to MP4 Converter
Turn WebM screen recordings and downloads into widely supported MP4 files.
✓ Free · No sign-up · No watermark · Files stay on your device
How it works
1Choose your video.
2Select the quality.
3Press Start and download the MP4.
Questions
Is converting WebM to MP4 lossless?
It is re-encoded, so a tiny quality change is possible. The High quality setting keeps it very close.
Which formats can I convert?
Most common formats such as MOV, AVI, WebM, MKV and MP4 work. Rare codecs may fail.