01
Add your video
Drag in a video file — MP4, MOV, WebM, MKV, or AVI. The file is read locally; nothing is uploaded.
Change video format
Convert video online, free and in your browser.
Convert video online for free — MOV to MP4, MP4 to WebM, WebM to MP4, and AVI to MP4 — with no sign-up and nothing uploaded.
Got a clip in the wrong format to upload, edit, or play? Pick a target format (MP4 or WebM), trim the part you need, and download the converted file. Your video never leaves your device — it's decoded and re-encoded right here in the page, on your own machine.
- No upload
- Runs 100% in your browser.
- MP4 · WebM
- Pick the target format you need.
- Trim as you go
- Convert just the range you want.
How it works
Three steps to a new video format.
02
Pick a range & target format
Choose the start and end you want (up to 10 minutes) and a target format — MP4 for the most compatibility, or WebM for an open, web-native file.
03
Preview & download
The video is converted in your browser. Play it on the page to check it, then download the file in its new format.
Target formats
MP4 or WebM — and the common conversions.
MP4 (H.264 + AAC) — the most compatible format. Plays on almost every phone, computer, app, and editor. Best for MOV→MP4, AVI→MP4, and WebM→MP4.
WebM (VP9 + Opus) — an open, web-native format with great compression for the web. Best for MP4→WebM when you want a smaller, royalty-free file.
Common jobs — MOV to MP4, MP4 to WebM, WebM to MP4, and AVI to MP4, all done on your device with no upload.
Performance & privacy
Private by design — and honest about speed.
Nothing is uploaded — your video is converted entirely on your device, so it stays private.
Changing a format is a full re-encode, not a remux, that runs on a single thread in the browser, so it can take a while on longer or higher-resolution clips — a progress bar shows how it's going.
A re-encode incurs a small, unavoidable quality loss; the presets pick sensible quality so it stays minor and the result plays reliably.
No account, no watermark, no install — it runs in the browser you already have open.
Need more than a new format?
Turn the video into notes and a transcript.
If you want the words, not just a new format, Video to Notes can transcribe a video and write a summary, key points, and a timeline you can download. For YouTube links and longer videos, the Chrome extension does it right in your browser.
- Full transcript plus an AI summary
- Key points and a clickable timeline
- Export to Markdown, PDF, or HTML
FAQ
Convert video questions
How do I convert a video online for free?
To convert a video online for free, drop a video file onto the box on this page or choose one. Pick the part you want and a target format (MP4 or WebM), then select Convert video. The video is re-encoded into the new format in your browser and offered as a download you can also preview first.
Is my video uploaded to a server?
No. The video stays on your device. It is decoded and re-encoded entirely in your browser — nothing is uploaded, and the converted video is returned straight to you as a download.
Which conversions are supported?
You can convert to MP4 (H.264 video with AAC audio) or to WebM (VP9 video with Opus audio). That covers the common jobs — MOV to MP4, AVI to MP4, WebM to MP4, and MP4 to WebM. Pick MP4 for the most compatibility or WebM for an open, web-native file.
Is the conversion lossless and instant?
No. Changing a video's format is a full re-encode, not a remux, so it takes real time and there is a small quality loss — the presets pick sensible quality so it stays small. Because it runs on your own device on a single thread, longer or higher-resolution clips take longer; a progress bar shows how it is going, so keep the tab open.
Which video formats can I convert from?
Common video files work as the source — MP4, MOV, WebM, MKV, AVI, and more. The output is the target format you choose (MP4 or WebM). Each conversion handles a range of up to 10 minutes; for a longer file, convert it in parts.
Is it free and do I need to sign up?
It is free and there is no sign-up. Because everything runs in your browser, there is no usage limit on converting video.
Try it now
Change your video's format.
No account, no upload — just a clip and a target format.