XGA on a 15" screen
Monitors · XGA
Resolution
1024×768
Diagonal
15"
Pixel density
85ppi
| Resolution | 1024 × 768 |
|---|---|
| Resolution class | XGA |
| Diagonal | 15" |
| Pixel density | 85 ppi |
| Aspect ratio | 4:3 |
| Total pixels | 786,432 · 0.8 MP |
| Physical size | 304.8 × 228.6 mm |
| Screen area | 108 in² |
| Pixel pitch | 297.7 µm |
| Pixels vanish at | 102.3 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 XGA on a 15" screen screen resolution?
1024×768 pixels — 786,432 in total, about 0.8 megapixels, which puts it in the XGA class.
Q. What is the pixel density of the XGA on a 15" screen?
85 ppi. That is the diagonal in pixels of a 1024×768 grid divided by the 15" diagonal of the panel, and it makes each pixel about 297.7 micrometres across.
Q. How big is the XGA on a 15" screen screen in millimetres?
304.8 mm wide and 228.6 mm tall, worked out from the 15" diagonal and the 4:3 aspect ratio. The visible area is roughly 108 square inches.
Q. How far away do pixels stop being visible on the XGA on a 15" screen?
About 102.3 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 XGA on a 15" screen use?
4:3, with the long edge 1.33× 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 |
|---|---|---|---|
| VGA on a 15" screen | 640×480 | 15" | 53 ppi |
| SVGA on a 15" screen | 800×600 | 15" | 67 ppi |
| HD+ on a 15.6" screen | 1600×900 | 15.6" | 118 ppi |
| WUXGA on a 15.6" screen | 1920×1200 | 15.6" | 145 ppi |
| 4K on a 15.6" screen | 3840×2160 | 15.6" | 282 ppi |
| WXGA on a 14" screen | 1366×768 | 14" | 112 ppi |
| QHD+ on a 16" screen | 3200×2000 | 16" | 236 ppi |
| 2.8K on a 14" screen | 2880×1800 | 14" | 243 ppi |