See your screen resolution, browser window size, pixel ratio and more, updated live as you resize. Free and private.
NinjaFunction's screen resolution checker shows the size of your screen, the size of your browser window, the available screen, the device pixel ratio, an estimate of the real pixels, colour depth, orientation, touch support and your light or dark theme setting. The numbers update live when you resize the window or turn your phone, and you can copy any of them or all of them at once. The details are read in your browser and are not sent anywhere.
| Name | Resolution | Usually found on |
|---|---|---|
| HD | 1280 × 720 | Small or older screens, video |
| Laptop | 1366 × 768 and 1536 × 864 | Many laptops |
| Full HD (1080p) | 1920 × 1080 | Most desktop monitors and TVs |
| QHD (1440p) | 2560 × 1440 | Gaming and design monitors |
| 4K (UHD) | 3840 × 2160 | Large monitors and TVs |
| Phones | About 360 to 430 px wide | Phones, reported in CSS pixels |
It is shown at the top of this page in large numbers, for example 1920 × 1080. The first number is the width and the second is the height, both in pixels.
The screen resolution is the size of your whole display. The browser window size, also called the viewport, is only the space inside your browser where web pages are drawn. It is usually smaller, and it changes when you resize the window.
Phones and many laptops have very sharp screens. They report their size in CSS pixels, which are larger than the real pixels. The pixel ratio tells you how many real pixels fit in one CSS pixel, and multiplying the two gives an estimate of the real resolution.
The device pixel ratio is the number of real screen pixels used for each CSS pixel. A normal screen has 1, and a sharp screen has 2 or 3. Websites use it to pick sharper images for high-density screens.
On computers, 1920 × 1080 (Full HD) is the most common, followed by smaller laptop sizes such as 1366 × 768 and 1536 × 864. Phones vary widely, and most report a width between 360 and 430 pixels.
Zooming changes the size of the browser window in CSS pixels, so the window size and the pixel ratio change. The screen resolution may change too, because it is also reported in CSS pixels.
No. The details are read in your browser and shown on this page only.
