27" QHD monitor
Monitors · QHD
Resolution
2560×1440
Diagonal
27"
Pixel density
109ppi
| Resolution | 2560 × 1440 |
|---|---|
| Resolution class | QHD |
| Diagonal | 27" |
| Pixel density | 109 ppi |
| Aspect ratio | 16:9 |
| Total pixels | 3,686,400 · 3.7 MP |
| Physical size | 597.7 × 336.2 mm |
| Screen area | 311.5 in² |
| Pixel pitch | 233.5 µm |
| Pixels vanish at | 80.3 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 27" QHD monitor screen resolution?
2560×1440 pixels — 3,686,400 in total, about 3.7 megapixels, which puts it in the QHD class.
Q. What is the pixel density of the 27" QHD monitor?
109 ppi. That is the diagonal in pixels of a 2560×1440 grid divided by the 27" diagonal of the panel, and it makes each pixel about 233.5 micrometres across.
Q. How big is the 27" QHD monitor screen in millimetres?
597.7 mm wide and 336.2 mm tall, worked out from the 27" diagonal and the 16:9 aspect ratio. The visible area is roughly 311.5 square inches.
Q. How far away do pixels stop being visible on the 27" QHD monitor?
About 80.3 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 27" QHD monitor 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 |
|---|---|---|---|
| 27" Full HD monitor | 1920×1080 | 27" | 82 ppi |
| 27" 4K monitor | 3840×2160 | 27" | 163 ppi |
| Apple Studio Display | 5120×2880 | 27" | 218 ppi |
| 27" 5K monitor | 5120×2880 | 27" | 218 ppi |
| DCI 4K on a 27" screen | 4096×2160 | 27" | 172 ppi |
| 24" Full HD monitor | 1920×1080 | 24" | 92 ppi |
| iMac 24" (M3) | 4480×2520 | 23.5" | 219 ppi |
| 32" QHD monitor | 2560×1440 | 32" | 92 ppi |