40" 5K2K Ultrawide
Monitors · QHD+
Resolution
5120×2160
Diagonal
40"
Pixel density
139ppi
| Resolution | 5120 × 2160 |
|---|---|
| Resolution class | QHD+ |
| Diagonal | 40" |
| Pixel density | 139 ppi |
| Aspect ratio | 21:9 (64:27) |
| Total pixels | 11,059,200 · 11.1 MP |
| Physical size | 936.1 × 394.9 mm |
| Screen area | 573 in² |
| Pixel pitch | 182.8 µm |
| Pixels vanish at | 62.9 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 40" 5K2K Ultrawide screen resolution?
5120×2160 pixels — 11,059,200 in total, about 11.1 megapixels, which puts it in the QHD+ class.
Q. What is the pixel density of the 40" 5K2K Ultrawide?
139 ppi. That is the diagonal in pixels of a 5120×2160 grid divided by the 40" diagonal of the panel, and it makes each pixel about 182.8 micrometres across.
Q. How big is the 40" 5K2K Ultrawide screen in millimetres?
936.1 mm wide and 394.9 mm tall, worked out from the 40" diagonal and the 64:27 aspect ratio. The visible area is roughly 573 square inches.
Q. How far away do pixels stop being visible on the 40" 5K2K Ultrawide?
About 62.9 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 40" 5K2K Ultrawide use?
21:9 (exactly 64:27), with the long edge 2.37× 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 |
|---|---|---|---|
| 42-inch 4K OLED monitor | 3840×2160 | 41.5" | 106 ppi |
| 37.5" UWQHD+ Ultrawide | 3840×1600 | 37.5" | 111 ppi |
| 45" UWQHD OLED | 3440×1440 | 45" | 83 ppi |
| 34" ultrawide QHD | 3440×1440 | 34" | 110 ppi |
| 32" QHD monitor | 2560×1440 | 32" | 92 ppi |
| 32" 4K monitor | 3840×2160 | 32" | 138 ppi |
| Apple Pro Display XDR | 6016×3384 | 32" | 216 ppi |
| 32" 8K monitor | 7680×4320 | 32" | 275 ppi |