4K on a 15.6" screen
Monitors · 4K UHD
Resolution
3840×2160
Diagonal
15.6"
Pixel density
282ppi
| Resolution | 3840 × 2160 |
|---|---|
| Resolution class | 4K UHD |
| Diagonal | 15.6" |
| Pixel density | 282 ppi |
| Aspect ratio | 16:9 |
| Total pixels | 8,294,400 · 8.3 MP |
| Physical size | 345.4 × 194.3 mm |
| Screen area | 104 in² |
| Pixel pitch | 89.9 µm |
| Pixels vanish at | 30.9 cm |
| Orientation | Landscape |
How to read this
- Pixel density (ppi) is how many pixels fit in one inch. Resolution alone cannot tell you — you have to divide by the diagonal.
- The same 4K is 163 ppi on a 27" monitor and 68 ppi on a 65" TV. That is more than double, but a TV is watched from far away, so it does not matter.
- The distance at which pixels vanish comes from one arcminute, the limit of human sight. Once a pixel looks smaller than that, no eye can find the grid.
- Aspect ratio is width and height reduced to the simplest whole numbers. Modern phones are 19.5:9 or 20:9, so 16:9 video leaves black bars on the sides.
Frequently asked questions
Q. What is the 4K on a 15.6" screen screen resolution?
3840×2160 pixels — 8,294,400 in total, about 8.3 megapixels, which puts it in the 4K UHD class.
Q. What is the pixel density of the 4K on a 15.6" screen?
282 ppi. That is the diagonal in pixels of a 3840×2160 grid divided by the 15.6" diagonal of the panel, and it makes each pixel about 89.9 micrometres across.
Q. How big is the 4K on a 15.6" screen screen in millimetres?
345.4 mm wide and 194.3 mm tall, worked out from the 15.6" diagonal and the 16:9 aspect ratio. The visible area is roughly 104 square inches.
Q. How far away do pixels stop being visible on the 4K on a 15.6" screen?
About 30.9 cm. That is where a pixel subtends less than one arcminute, the limit of human sight — closer than that and the grid starts to show.
Q. What aspect ratio does the 4K on a 15.6" screen use?
16:9, with the long edge 1.78× the short one. It is wider than it is tall, which suits video and side-by-side documents.
Screens of a similar size
The same diagonal at a different resolution means a different density. 4K is 163 ppi on a 27" monitor and 68 ppi on a 65" TV.
| Device | Resolution | Diagonal | Density |
|---|---|---|---|
| HD+ on a 15.6" screen | 1600×900 | 15.6" | 118 ppi |
| WUXGA on a 15.6" screen | 1920×1200 | 15.6" | 145 ppi |
| QHD+ on a 16" screen | 3200×2000 | 16" | 236 ppi |
| VGA on a 15" screen | 640×480 | 15" | 53 ppi |
| SVGA on a 15" screen | 800×600 | 15" | 67 ppi |
| XGA on a 15" screen | 1024×768 | 15" | 85 ppi |
| WXGA on a 14" screen | 1366×768 | 14" | 112 ppi |
| 2.8K on a 14" screen | 2880×1800 | 14" | 243 ppi |