Free online video converter
Convert video to MP4, WebM, MOV, MKV, AVI, GIF or MP3. Everything runs in your browser.
or drop them here · MP4, MOV, MKV, AVI, WebM, FLV, WMV, 3GP and more
How to convert a video
- Add your videos. Click "Choose videos" or drag files onto the box. You can add several at once.
- Pick a format. Choose MP4, WebM, MOV, MKV, AVI, GIF or MP3, and optionally a smaller resolution.
- Convert and download. Click Convert. When a file shows "Done", download it, or download everything as one ZIP.
The first conversion downloads the conversion engine (about 32 MB). Your browser keeps it afterwards, so later visits start faster. Conversion runs on your own computer, so speed depends on its power and on the size of the video.
What each output format contains
| Format | Video | Audio | Typical use |
|---|---|---|---|
| MP4 | H.264 | AAC 128 kbps | Playing almost anywhere: phones, TVs, social apps |
| MOV | H.264 | AAC 128 kbps | Apple apps and some editing software |
| MKV | H.264 | AAC 128 kbps | A flexible container used for archives |
| WebM | VP8 | Vorbis | Video on web pages |
| AVI | MPEG-4 Part 2 | MP3 128 kbps | Older players and devices |
| GIF | Animated, 256 colors, 12 fps, up to 480 px | None | Short silent loops |
| MP3 | None | MP3 192 kbps | Audio only |
Resolution choices are Original, 1080p, 720p, 480p and 360p. The converter only scales down, never up, and keeps the shape of the picture. Not sure which format you need? Read MP4 vs MOV vs MKV vs AVI vs WebM.
Your videos stay on your device
Free Video Converter runs FFmpeg, a widely used open-source video tool, compiled to WebAssembly directly in your browser. Your files are read from your disk and the converted result is created in your browser's memory. They are not uploaded to our servers. You can verify this yourself with your browser's developer tools; here is how.
Frequently asked questions
Is it really free?
Yes. There is no sign-up, no watermark and no limit on the number of files set by us. The site may show advertising to cover its costs.
Are my videos uploaded anywhere?
No. Conversion happens in your browser. The only thing downloaded is the page itself and, on first use, the conversion engine. Like any website, our hosting provider keeps standard server logs; see the privacy policy.
How large a video can I convert?
We do not set a file size limit, but the whole file is loaded into your browser's memory. Very large files may fail, particularly on phones and tablets. If a conversion fails, try a lower resolution, close other tabs, or convert fewer files at once.
Why is it slower than a desktop program?
The conversion engine runs inside the browser on a single thread, which is slower than a native application that can use all of your computer's resources. For very long or high-resolution videos, a desktop converter will be faster.
Which files can it open?
Common video formats such as MP4, MOV, MKV, AVI, WebM, FLV, WMV, 3GP, TS and MPEG. We have not tested every possible codec. If a file cannot be converted, an error is shown next to it.
Does it keep subtitles and extra audio tracks?
No guarantee. One video stream and one audio stream are kept by default, so do not rely on subtitles or alternative audio tracks being preserved.
Can it download videos from YouTube or other sites?
No. It only converts files that you already have on your device, and it cannot remove copy protection. Only convert content you have the right to use.
From the blog
How to Convert a Video to MP4 for Free (Step by Step)
A plain walkthrough of converting a video to MP4 in your browser: what to click, what settings mean, how long it takes and what can go wrong.
MP4 vs MOV vs MKV vs AVI vs WebM: What Is the Difference?
Video file extensions are containers, not quality levels. Learn what MP4, MOV, MKV, AVI and WebM each are, and which to pick for your situation.
How to Convert MOV to MP4 (iPhone and Mac Videos)
Why iPhone and Mac videos are MOV files, why they sometimes will not play elsewhere, and how to convert them to MP4 in your browser.
How to Extract Audio From a Video as an MP3
Turn a video into an MP3 audio file in your browser. What bitrate you get, what quality to expect, and the limits to know about.
How to Turn a Video Into an Animated GIF (and Why GIFs Get So Big)
Convert a video clip to an animated GIF in your browser, with honest notes on size, colors, frame rate and when MP4 or WebM is a better choice.
How to Make a Video File Smaller Without Installing Software
What actually determines video file size, and how lowering the resolution while converting can shrink a file. Realistic expectations included.