PPI vs DPI
Understand the difference between PPI for displays and DPI for printing, with a side-by-side comparison and a PPI calculator.
Pixel density
91.8 PPI
Diagonal pixels: 2,203
Popular monitors — PPI comparison
| Display | Resolution | PPI |
|---|---|---|
| 24 in Full HD monitor | 1920 x 1080 | 92 |
| 27 in QHD monitor | 2560 x 1440 | 109 |
| 27 in 4K UHD monitor | 3840 x 2160 | 163 |
| 32 in 4K UHD monitor | 3840 x 2160 | 138 |
| 34 in Ultrawide QHD monitor | 3440 x 1440 | 110 |
| 15.6 in Full HD laptop | 1920 x 1080 | 141 |
| 13.3 in QHD laptop | 2560 x 1440 | 221 |
Source note: PPI values are calculated here from each display's stated resolution and diagonal size using PPI = diagonal pixels / diagonal inches. Diagonal sizes are nominal manufacturer sizes.
| Term | Used for | Formula |
|---|---|---|
| PPI | Displays | Diagonal pixels / diagonal inches |
| DPI | Printing | Pixels / print inches |
How to use this calculator
Enter your values, read the result, and use the reset button to start again.
Formula
PPI = Diagonal pixels / Diagonal inches (displays). DPI = Pixels / Print inches (printing).
Frequently asked questions
Can I use PPI and DPI interchangeably?
In casual conversation people do, but technically PPI describes display pixels and DPI describes printed dots. They are related ideas, not the same measurement.