Free PPI Calculator
Calculate the PPI (pixels per inch) of any screen, monitor, phone, or display. Enter your device's pixel dimensions and screen size (diagonal inches) to see the resulting pixel density.
🧮 Calculate Your PPI
Resulting PPI
92
Screen Quality: Good
What is PPI?
PPI (pixels per inch) measures pixel density — how many pixels fit within one linear inch on a display. Higher PPI means sharper text, smoother curves, and more detailed images.
📊 PPI Quality Reference
| PPI Range | Quality | Common Devices |
|---|---|---|
| Below 100 | Low | Old monitors, budget displays |
| 100–149 | Standard | Standard desktop monitors |
| 150–199 | Good | HD laptops |
| 200–299 | High | Full HD laptops, tablets |
| 300–399 | Very High ⭐ | Retina displays, MacBooks |
| 400–499 | Ultra High | Flagship smartphones |
| 500+ | Extreme | 4K+ phones, VR headsets |
🧮 How to Calculate PPI
Formula: PPI = √(width² + height²) ÷ diagonal
Example: For 1920×1080 on a 24" screen, PPI = √(1920² + 1080²) ÷ 24 = 2203 ÷ 24 ≈ 92 PPI.