Convert Video
Convert a video between MP4, WebM and MOV. MP4 and MOV use H.264 with AAC audio; WebM uses VP8 with Opus. Conversion runs in your browser.
- Runs entirely in your browser
- No sign-up, no watermark
- Free and unlimited
🔒 Your file stays on your device
Need to scan documents from your phone?
VideoKit
Compress • Trim • Convert • GIF
How to use Convert Video
- 1
Drop a file onto Convert Video, or click to choose from your device.
- 2
Set any options for how the file should be processed.
- 3
Press the action button — everything runs in your browser.
- 4
Download the result. Nothing is uploaded or stored.
What you get
- MP4, WebM and MOV output
- Accepts MKV, AVI and more as input
- Runs on your device
What happens to your files
This tool runs entirely in your browser. The file you choose is read into memory, processed on your device, and offered back as a download. Nothing is uploaded and nothing is kept once you leave the page.
There is no account, no email, no watermark and no daily limit. Come back whenever you need it.
Frequently asked questions
- Why is WebM conversion slow?
- VP8 encoding is heavy for a browser. For long clips, MP4 is much faster.
- Can I convert to GIF or MP3?
- Yes — use the Video to GIF and Video to MP3 tools, which have settings made for those formats.
- How large a video can I use?
- Up to 300 MB. The video is processed in your browser's memory, so very long or very large files can run out of it. For those, the free VideoKit mobile app processes videos natively on your phone.
- Is my video uploaded anywhere?
- No. FFmpeg runs inside your browser tab as WebAssembly, so the video never leaves your device. The first run downloads the video engine (about 30 MB) from this site once and reuses it afterwards.