Pixel 4a
Phones · FHD+ · 2020
Resolution
1080×2340
Diagonal
5.81"
Pixel density
444ppi
| Resolution | 1080 × 2340 |
|---|---|
| Resolution class | FHD+ |
| Diagonal | 5.81" |
| Pixel density | 444 ppi |
| Aspect ratio | 19.5:9 (6:13) |
| Total pixels | 2,527,200 · 2.5 MP |
| Physical size | 61.8 × 134 mm |
| Screen area | 12.8 in² |
| Pixel pitch | 57.3 µm |
| Pixels vanish at | 19.7 cm |
| Orientation | Portrait |
| Released | 2020 |
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 Pixel 4a screen resolution?
1080×2340 pixels — 2,527,200 in total, about 2.5 megapixels, which puts it in the FHD+ class.
Q. What is the pixel density of the Pixel 4a?
444 ppi. That is the diagonal in pixels of a 1080×2340 grid divided by the 5.81" diagonal of the panel, and it makes each pixel about 57.3 micrometres across.
Q. How big is the Pixel 4a screen in millimetres?
61.8 mm wide and 134 mm tall, worked out from the 5.81" diagonal and the 6:13 aspect ratio. The visible area is roughly 12.8 square inches.
Q. How far away do pixels stop being visible on the Pixel 4a?
About 19.7 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 Pixel 4a use?
19.5:9 (exactly 6:13), with the long edge 2.17× the short one. It is taller than it is wide, which suits a device you hold in one hand.
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.