Video Format Converter
Convert video between MP4, WebM, MOV, and AVI — free, fast, and processed entirely on your device.
Runs entirely in your browser — your files are never uploaded to a server.
How It Works
1. Choose Your File
Drag & drop or select the file you want to work with.
2. Processed in Your Browser
Everything happens locally on your device — your file is never uploaded anywhere.
3. Download Your Result
Get your finished file instantly, ready to save or share.
Frequently Asked Questions
Which format should I choose?
MP4 is the most universally compatible choice for sharing and playback. WebM is best for web embedding with smaller file sizes. MOV is native to Apple devices. AVI is mainly useful for older or legacy software compatibility.
Will converting reduce video quality?
There's a small amount of quality loss any time video is re-encoded (standard for all format conversion, not just this tool), but it's set to a level that's not visually noticeable for typical viewing.
How long does conversion take?
It depends on your video's length and resolution, since all encoding happens on your own device — longer or higher-resolution videos take more time.
Can I convert to WebM specifically?
Yes — WebM conversion uses the VP9/Opus codecs specifically, since that's what the WebM format actually requires internally.