DPI/PPI Calculator
Calculate screen pixel density (DPI/PPI) and evaluate display clarity.
Screen Parameters
Common Devices Reference
| Device | Resolution | Size | PPI |
|---|---|---|---|
| iPhone 15 Pro | 1170×2532 | 6.1" | 460 |
| iPhone 15 Pro Max | 1290×2796 | 6.7" | 460 |
| iPad Pro 12.9" | 2048×2732 | 12.9" | 264 |
| MacBook Pro 14" | 3024×1964 | 14.2" | 254 |
| MacBook Pro 16" | 3456×2234 | 16.2" | 254 |
| 4K Monitor 27" | 3840×2160 | 27" | 163 |
| 2K Monitor 27" | 2560×1440 | 27" | 109 |
| FHD Monitor 24" | 1920×1080 | 24" | 92 |
Features
DPI (Dots Per Inch) and PPI (Pixels Per Inch) both measure screen pixel density. Higher PPI means sharper display.
- PPI > 300:Retina level — pixels are virtually indistinguishable to the human eye
- PPI 150-300:HD level — clear enough for daily use
- PPI < 150:Standard level — pixels visible up close
Usage Instructions
Features
Calculate screen pixel density (DPI/PPI), evaluate display clarity from resolution and screen size, and show reference data for common devices.
Steps
Enter horizontal pixels, vertical pixels, and screen size (inches) → click "Calculate" → view PPI, physical dimensions and other details; or click a row in the common devices table to autofill parameters.
Notes
PPI and DPI are usually equivalent for screens; calculation is based on physical pixels without system scaling; all calculations run locally in the browser.