DPI Calculator
Calculate screen DPI/PPI pixel density online, with device presets
📐 Calculate DPI/PPI
📊 Result Chart
📱 Common Device Presets
📋 DPI Level Reference
| DPI Range | Level | Typical Devices | Experience |
|---|---|---|---|
| <100 | Low | Large monitors, projectors | Pixels clearly visible |
| 100-150 | Medium-Low | Standard laptops, desktop monitors | Acceptable at normal distance |
| 150-200 | Medium | High-end laptops | Sharp text |
| 200-300 | High | Phones, tablets | Rich detail |
| 300-400 | Ultra High | Flagship phones | Retina level |
| 400+ | Extreme | VR headsets | Pixels indistinguishable |
❓ FAQ
What is DPI and PPI?
DPI (Dots Per Inch) refers to dots per inch, typically used in printing; PPI (Pixels Per Inch) refers to pixels per inch, used for digital displays. In screen contexts, they are often used interchangeably to indicate pixel density. Higher values mean sharper displays.
How to calculate DPI/PPI?
PPI = √(horizontal pixels² + vertical pixels²) ÷ screen diagonal size (inches). For example, a 5.5-inch screen at 1920×1080, PPI = √(1920² + 1080²) ÷ 5.5 ≈ 401 PPI.
What is the maximum PPI the human eye can see?
It depends on viewing distance. At 25cm, the human eye limit is about 720 PPI; at 30cm (normal phone distance) about 600 PPI; at 50cm (desktop distance) about 350 PPI. Apple's "Retina" standard is 326 PPI at 25cm.
How many DPI do I need for printing?
Standard document printing: 150-200 DPI; photo printing: 300+ DPI; high-quality art printing: 600-1200 DPI. Print DPI and screen PPI are different concepts.
Is this calculator safe?
Completely safe! All calculations are done locally in your browser. No data is sent to any server, and no personal information is collected.