Results
Pixels Per Inch (PPI):
PPI2:
Dot Pitch (DPI):
Screen Width:
Screen Height:
Screen Diagonal:
Display Size:
Total Pixels:
Aspect Ratio:
PPI Calculator – Pixels Per Inch
The PPI Calculator helps you calculate the pixel density of a display, also known as Pixels Per Inch (PPI). It's essential for comparing screen sharpness across monitors, phones, laptops, and tablets.
How to Use the PPI Calculator
Enter the following values:
- Resolution (width × height) in pixels
- Screen size (diagonal) in inches
The calculator will display your screen’s pixel density in PPI.
PPI Calculation Formula
PPI = √(width² + height²) ÷ screen size (in inches)
Example
Resolution: 1920 × 1080
Screen size: 15.6 inches
→ √(1920² + 1080²) = √(3,686,400 + 1,166,400) = √4,852,800 = 2202.91
→ PPI = 2202.91 ÷ 15.6 = 141.22 PPI
Common Use Cases
- Comparing smartphone and laptop displays
- Choosing the best monitor for design or gaming
- Understanding screen sharpness (Retina quality)
- UI/UX and web design optimization
- Scaling apps or websites correctly
Why Use a PPI Calculator?
PPI affects the clarity and sharpness of text, images, and videos. This tool helps tech buyers, designers, and developers make informed decisions about display quality.
Frequently Asked Questions (FAQs)
What is PPI?
PPI stands for Pixels Per Inch — a measure of how many pixels are packed into one inch of screen space.
Is PPI the same as DPI?
They’re often used interchangeably, but DPI usually refers to print resolution, while PPI is for screens.
What is a good PPI for a screen?
For sharp displays: ≥ 300 PPI for phones, ≥ 150 PPI for laptops/monitors is considered good.
Does a higher PPI mean better quality?
Yes, higher PPI typically means sharper visuals, but also depends on viewing distance and screen quality.
Can PPI affect battery life?
Yes, higher resolution screens with high PPI consume more power, affecting battery life in portable devices.