Convert any video,
any format.
Drop your video, pick an output format and convert — entirely in your browser. No account, no watermark, nothing uploaded.
Drop your video
Drag in any MP4, WebM, MOV or MKV file.
Choose the output format
Pick from MP4, WebM, MOV, MKV or AVI.
Convert and download
Click Convert, wait for encoding, then download your new file.
Which video formats can I convert between?
MP4 (H.264), WebM (VP8), MOV (H.264), MKV (H.264) and AVI (MPEG4). More formats may be supported depending on your browser's WebAssembly capabilities.
Is my video uploaded anywhere?
No. Conversion runs entirely inside your browser using ffmpeg.wasm. Your video never leaves your device.
Why is MP4 the best output for sharing?
MP4 with H.264 encoding is the most universally supported format — it plays on every platform, browser, TV and social network without any conversion.
How long will conversion take?
Processing time depends on the video length, source format and your device. A 10-minute 1080p video typically takes 2–5 minutes on a modern laptop.
Can I convert very large files?
Yes, but large files require more RAM. Files above 2 GB may cause issues in browsers that limit memory. We recommend keeping source files under 2 GB for best results.