What is PPI and why does it matter?

PPI stands for Pixels Per Inch. A higher PPI means the display has higher pixel density, yielding sharper images and text. It is critical for web/UI layout designers.

How is PPI calculated?

We use the Pythagorean theorem to calculate the diagonal resolution in pixels, and divide that by the physical diagonal inches: PPI = sqrt(w^2 + h^2) / diagonal.

Does it show common resolution benchmarks?

Yes! The calculator outputs standard definitions (e.g. Full HD, 4K, Retina display thresholds) for your calculations.

Is diagonal size required?

It is only required to calculate the physical density (PPI). You can leave it blank if you only want aspect ratios and total pixel counts.

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Free Screen Resolution Calculator

Calculate screen PPI, aspect ratio, and total pixels instantly. No registration, runs 100% locally in your browser.

Width (Pixels)

Height (Pixels)

Diagonal (Inches)

Display Specifications

Aspect Ratio16:9

ClassificationFull HD

Total Pixels

Screen Density (PPI)Enter diagonal size

High pixel density yields sharper texts and UI designs.

Standard Display Presets

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What is the Free Screen Resolution Calculator?

The Screen Resolution Calculator is a technical utility for web designers, developers, and hardware enthusiasts. It instantly calculates Pixels Per Inch (PPI), total pixel counts, and aspect ratios based on display dimensions. This is essential for designing responsive web interfaces, verifying retina display densities, and understanding physical screen capabilities.

100% Private, Client-Side Processing

All calculations are executed instantly in your local browser. Supashot does not collect or track your input data. The tool relies on pure mathematical functions in Javascript, ensuring a fast, private, and offline-capable experience.

How Screen Resolution Calculator Works

Enter the horizontal and vertical screen resolution (e.g. 1920 x 1080).

Specify the physical diagonal screen size in inches (e.g. 15.6).

Review the calculated PPI, total pixel counts, and aspect ratios instantly.

Why Choose Supashot?

vs. General Math Tools

Specifically tailored for display metrics, automatically applying the Pythagorean theorem to calculate accurate diagonal PPI without manual formulas.

vs. Ad-Heavy Calculators

Provides a clean, instant, and private interface without tracking your usage or cluttering your workflow with advertisements.

Frequently Asked Questions

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