AI 4K Video Upscaler: Upscale Video to 4K Online
This 4K video upscaler turns 1080p, 720p and anime footage into 3840×2160 video in your browser. Instead of stretching the pixels you already have, the AI rebuilds edges and texture at 4K.
4K costs 3 credits per second, and you can try it free when you sign up. Try it now.
Upscale your video to 4K.
MP4, MOV, MKV or WebM up to 500 MB · free to try
How to upscale video to 4K in three steps
Everything runs in the browser, so there is no software to install and no graphics card needed.
1. Upload your video.
Drop in an MP4, MOV, MKV or WebM file up to 500 MB. Clean 1080p and 720p sources give the best 4K results.
Get started2. Choose 4K.
The credit cost shows on screen first. Partial seconds are rounded up, so a 9.4-second clip counts as 10.
3. Download your 4K video.
You get a 4K file with the original audio and aspect ratio. Finished videos stay in your history.
Real results from our 4K video upscaler
1080p city footage
Night aerial of Tokyo upscaled from 1080p to 4K. Windows, signs and road markings come out sharper.
720p night shots
A car under street lights, taken from 720p to 4K. Headlight edges and bodywork come out cleaner.
Anime and animation
Clean line art upscales especially well. This 720p scene was upscaled to 4K.
An AI 4K upscaler rebuilds the detail.
Run your own footage through the 4K upscaler.
Upscale to 4KWhen should you convert video to 4K?
It pays to convert video to 4K when it will play on a large screen and the source has detail worth rebuilding. For tiny or heavily compressed clips, 1080P or 2K often looks more natural.
Try it with your video1080p for 4K TVs and monitors.
The usual upgrade. Fine detail like text, foliage and architecture benefits most.
720p that deserves a big screen.
Clean 720p footage can hold up at 4K. Compare with 2K if you are unsure.
Anime and illustrated video.
Flat colors and clean lines upscale well, even from lower resolutions.
Not ideal for tiny, blurry clips.
Starting from 480p or lower? Pick 1080P first. AI rebuilds detail but cannot recover what the camera never captured.
What 4K costs:
Priced per second
4K uses 3 credits for each second of video, rounded up. 1080P uses 1 and 2K uses 2.
10 seconds = 30 credits
A 30-second clip is 90 credits and a one-minute video is 180.
Cost shown up front
You see the total before the job runs, and failed jobs are refunded automatically.
Free to try
New accounts get 10 free credits. Free results carry a small watermark until you make a purchase.
Frequently Asked Questions
4K video upscaler FAQ
Yes. 1080p to 4K is the most common upgrade. The model doubles the resolution and rebuilds edges and texture instead of simply enlarging the pixels.
Yes. Clean 720p footage often looks good in 4K. From 480p or lower, 1080P or 2K usually looks more natural, because the model cannot recover detail the original never captured.
Yes. A regular converter stretches the pixels, so the file is 4K in size but just as soft. AI upscaling reconstructs detail at the new size, so the result looks sharper.
The output is a real 3840×2160 file. The extra detail is reconstructed by the model, so it looks sharper, but it is not the same as footage originally shot in 4K.
3 credits per second of video, rounded up to the next whole second, so a 10-second clip is 30 credits.
Yes. The original soundtrack is copied into the upscaled file and the aspect ratio stays the same, including vertical video.
MP4, MOV, MKV, WebM and M4V files up to 500 MB. AVI, WMV, FLV and TS are not supported yet, so convert those to MP4 first with a free tool like HandBrake.
Still have questions? Email us at support@videoupscaler.co