ShadowToolkit

Dpi Calculator

Dpi Calculator running client-side on your device.

100% In-Browser
100% In-Browser PrivacyLocal

Your files and data are processed locally and never leave your device.

Display & Resolution Inputs

24" Inches (61.0 cm)
Popular Device Presets
Pixel Density
91.79PPI / DPI
Standard Desktop Density
Total Resolution
1920 × 1080
Total Pixels
2.07 MP
Aspect Ratio
16:9
Pixel Pitch
0.2767 mm
Physical Width
53.14 cm (20.92")
Physical Height
29.9 cm (11.77")
Print Output Physical Sizes
High Quality Print (300 DPI)

6.40" × 3.60" in (16.26 × 9.14 cm)

Draft Photo Print (150 DPI)

12.80" × 7.20" in (32.51 × 18.29 cm)

What is Dpi Calculator?

DPI & PPI Calculator calculates the exact pixel density (Pixels Per Inch / Dots Per Inch), pixel pitch, and total megapixel count for screens, digital cameras, and print media based on screen resolution and physical diagonal dimensions.

Zero-Server Client-Side Guarantee

Unlike legacy online utilities that upload sensitive media and documents to remote cloud storage, Shadow Toolkit executes this entire operation directly within your browser's local runtime. Your raw data never crosses the network.

Key Capabilities

  • Calculates exact PPI (Pixels Per Inch), pixel pitch in mm, and total megapixels
  • Built-in presets for popular devices: iPhone, iPad, MacBook Pro, 4K/5K displays, Apple Watch
  • Print size calculator: Determines maximum print dimensions at 300 DPI from image pixels
  • Visual aspect ratio and diagonal dimension diagram
  • 100% private in-browser calculation

Common Use Cases

1Evaluating display sharpness and pixel density before purchasing monitors or laptops
2Calculating maximum high-quality print dimensions (at 300 DPI) for photographic prints
3Designing responsive assets with appropriate 2x/3x Retina pixel densities
4Eliminating manual arithmetic errors when translating technical specifications and measurement systems

How to use Dpi Calculator

01

Enter Resolution

Input pixel width and height (e.g. 3840 x 2160).

02

Enter Screen Diagonal

Type diagonal screen size in inches (e.g. 27").

03

Read PPI & Density

Inspect pixel density (PPI), pixel pitch, and print capabilities.

04

Copy Formatted Values

Review the converted unit values and copy the exact numerical results or formula breakdown for your documentation.

Frequently Asked Questions

PPI = sqrt(Width^2 + Height^2) / Diagonal Inches.

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