Convert Any Video Format Right in Your Browser
Got a video that won't play, won't send, or gets rejected when you try to upload it? Nine times out of ten, it's simply saved in the wrong format for the device or app you're using. This free video converter fixes that: drop the file in, pick the format you need, and download the converted video in seconds.
Unlike a typical online video converter, this one never uploads your file anywhere. The conversion happens right in your browser, on your own computer. That's why there's no waiting in an upload queue, no file size limit, no watermark stamped on your video, and no account to create.
How to Convert a Video
- Drop your video into the tool above, or click to browse for it. It opens instantly — even a huge file, because nothing gets uploaded.
- Pick the output format. If you just want the video to play everywhere, choose MP4.
- Click Convert and watch the progress bar.
- Save the finished video to your device. It's clean — no watermark, ever.
Supported Formats and When You Need Them
Convert MOV to MP4
You filmed something on your iPhone, sent it to someone with a Windows computer, and they can't open it. That's because iPhones save videos as MOV files, and Windows often can't play them — it may even ask your recipient to pay $0.99 for a codec just to watch your clip. Convert the MOV to MP4 and it will open for everyone, on any phone or computer, in email, PowerPoint, anywhere. If this keeps happening with your iPhone videos, there's a full guide on iPhone MOV files — including the camera setting that prevents the problem.
Convert MKV to MP4
MKV files usually come from screen recording software like OBS, or from videos you've downloaded. They play fine on your PC — but your iPhone won't take them, most smart TVs ignore them, and editing apps like CapCut often refuse to import them. Converting to MP4 makes the exact same video work everywhere.
Convert AVI, MPEG, and WMV to MP4
These are the formats where old memories get stuck: camcorder footage saved as AVI, home DVDs ripped to MPEG, school projects made in Windows Movie Maker as WMV. Today's phones and TVs increasingly refuse to open any of them. Convert those files to MP4 and that old footage plays again — usually at a fraction of the file size, too. There's more background on each of these formats in the guide to converting AVI, MPEG, WMV, and WebM files.
Convert WebM to MP4
Loom recordings, Discord clips, Chrome screen captures, videos saved from websites — they all tend to come out as WebM files. The problem: iPhones won't play them, iMovie won't import them, and you can't text them to anyone. Converting WebM to MP4 turns a browser-only clip into a normal video you can share and edit anywhere.
Convert MP4 to MOV, WebM, AVI, or MKV
Sometimes you need to go the other way. Editing apps on a Mac can prefer MOV, websites load faster with WebM, and some older programs only accept AVI. This tool converts out of MP4 into all of those formats too — the MP4 to MOV, AVI, WebM, and MKV guide explains which one to pick and when.
Your Videos Never Leave Your Device
Most "online" converters quietly upload your video to their servers, convert it there, and send it back. This tool doesn't. Your file stays on your computer the whole time — the conversion runs inside your browser.
Don't take my word for it. Load this page, turn off your Wi-Fi, and convert a video: it still works, because nothing is being sent anywhere.
Keeping everything on your device is also why there's no catch. No servers to pay for means the tool stays genuinely free — no watermark, no sign-up wall, no daily limit. And no upload means no file size cap: even huge 4K videos convert without a hitch, as covered in how to convert large 4K and HD videos.
Works on Any Device
The converter runs in any modern browser — Chrome, Edge, Firefox, Safari — on Windows, Mac, Linux, Chromebooks, and Android phones. There's nothing to install, so it works even on locked-down work laptops and school Chromebooks where you can't install software. One honest note: on iPhones and iPads, the browser can struggle with very large files, so for multi-gigabyte videos a computer is the more reliable choice.
Frequently Asked Questions
Will converting change my video's quality?
For normal videos, you won't see a difference — the converter picks settings that keep the output looking like the original. What no converter can do is make a blurry video sharp; the quality you recorded is the quality you keep.
Is there a file size limit?
No fixed limit. Because your file is never uploaded to a server, there's no cap to hit — the only limit is your own device's memory. Computers handle multi-gigabyte videos comfortably.
Do I need to sign up or install anything?
No. There's no account, no email, no app, and no browser extension. Open the page, convert your video, done.
Does it work offline?
Yes. Once this page has loaded, you can disconnect from the internet entirely and it will keep converting. That's the simplest proof that your videos are never uploaded.
What's the best format for Instagram, TikTok, or YouTube?
MP4 — it's the one format every platform accepts without complaints. If a site rejects your video or an upload looks broken, converting it to MP4 fixes the problem in almost every case.