DPI / PPI Calculator

Calculate pixel density (DPI/PPI) for any display. Enter your screen resolution and diagonal size to get detailed display information. Browse common display sizes for monitors, smartphones, tablets, and more.

px
px
inch
Pixel Density 91.79
Total Pixels 2,073,600
Aspect Ratio 16:9
Display Type Full HD
24"
1920 × 1080

Common Display Sizes

What is DPI/PPI?

DPI (Dots Per Inch) and PPI (Pixels Per Inch) measure the pixel density of a display. Higher values mean sharper, more detailed images. PPI is calculated by dividing the diagonal resolution by the diagonal size in inches.

Why is Pixel Density Important?

Pixel density affects how sharp and clear content appears on a screen. Higher PPI values result in crisper text, smoother curves, and more detailed images. This is especially important for tasks like photo editing, reading, and detailed work.

Common PPI Categories

Standard displays typically have 72-96 PPI. Retina or high-density displays range from 200-300+ PPI. Professional monitors often feature 100-150 PPI for a balance between sharpness and screen real estate.

How to Use This Calculator

Enter your display's horizontal and vertical resolution in pixels, along with the diagonal screen size in inches. The calculator will instantly show your display's PPI, total pixel count, aspect ratio, and display category.

Understanding Aspect Ratios

Common aspect ratios include 16:9 (widescreen), 16:10 (productivity), 21:9 (ultrawide), and 4:3 (traditional). The aspect ratio affects how content is displayed and the overall viewing experience.

Viewing Distance Matters

The optimal PPI depends on viewing distance. Smartphones need higher PPI (300+) because they're held close, while TVs can have lower PPI (40-80) since they're viewed from farther away. Desktop monitors typically need 90-150 PPI.