Is Convert to MP4 free? Is there a watermark?

Yes — Convert to MP4 is completely free, with no sign-up, no watermark, and no limit on how many files you process.

Do my files get uploaded to a server?

No. Convert to MP4 runs entirely in your browser with WebAssembly, so your MOV, WebM, MKV, AVI, and more file never leaves your device and nothing is stored or seen by us.

What can I put in, and what do I get out?

Convert to MP4 accepts MOV, WebM, MKV, AVI, and more and gives you back a MP4 file.

Will I lose quality converting to MP4?

No noticeable loss for most files — Convert to MP4 uses high-quality settings (a two-pass colour palette for GIFs, H.264 at a visually-lossless quality for video), so the result stays crisp.

Free tools · Convert

Convert to MP4

Convert almost any video — MOV, WebM, MKV, AVI — into a standard H.264 MP4 that plays on every device and platform. No upload, no watermark, done in your browser.

Runs entirely in your browser. Your file is never uploaded — no watermark, no account.

Drop a file or click to chooseMOV, WebM, MKV, AVI, and more

How to use Convert to MP4

1
Choose your file. Drop a file into the tool, or click to select one. It stays on your device — nothing is uploaded.
2
Pick your settings. Adjust the options if you like, then press Run. The first run downloads a ~32 MB engine once; after that it's instant.
3
Download. Everything is processed right in your browser — download the finished file instantly, with no watermark.

Frequently asked questions

Is Convert to MP4 free? Is there a watermark?: Yes — Convert to MP4 is completely free, with no sign-up, no watermark, and no limit on how many files you process.
Do my files get uploaded to a server?: No. Convert to MP4 runs entirely in your browser with WebAssembly, so your MOV, WebM, MKV, AVI, and more file never leaves your device and nothing is stored or seen by us.
What can I put in, and what do I get out?: Convert to MP4 accepts MOV, WebM, MKV, AVI, and more and gives you back a MP4 file.
Will I lose quality converting to MP4?: No noticeable loss for most files — Convert to MP4 uses high-quality settings (a two-pass colour palette for GIFs, H.264 at a visually-lossless quality for video), so the result stays crisp.