About ScreenPPI

Last updated: November 2026

ScreenPPI is a free, privacy-first display calculator built for developers, designers, gamers, and tech enthusiasts. Every calculation—pixel density (PPI/DPI), physical dimensions, dot pitch, retinal viewing distance, and dual-screen comparisons—runs entirely in your browser. No data leaves your device.

We created ScreenPPI because comparing display specifications across devices shouldn't require spreadsheets or guesswork. Our device presets are built from exact panel specifications — native resolution and true factory diagonal — not rounded marketing sizes, which avoids the ±2 PPI drift common in other calculators.

What you can do on ScreenPPI

Pixel Density (PPI / DPI) Calculator: Calculate exact pixels per inch, aspect ratio, dot pitch, megapixels, and physical width and height for any display.
A/B Screen Comparison: Compare two screens side-by-side to visually assess differences in physical screen area, sharpness, and pixel density.
Photo & Print DPI Calculator: Check maximum sharp print dimensions at 300 DPI or find the image pixel dimensions needed for photo prints.
Retina Viewing Distance Engine: Determine the distance at which individual pixels become indistinguishable to human 20/20 vision.
Curated Device Presets: Quickly load factory panel dimensions and resolutions for popular monitors, laptops, tablets, and phones.
Display Guides & Reference: Clear guides on display scaling, resolution categories, and visual sharpness benchmarks.

Privacy First

Calculations are executed client-side in your browser with zero server storage, no sign-ups, and no accounts required. To learn more about how we handle preferences and advertising cookies, read our complete Privacy Policy.

Independent Maintenance

ScreenPPI is maintained independently by a solo developer and display enthusiast, supported by non-intrusive advertising. For questions, suggestions, or device preset requests, visit our Contact page or email hello@screenppi.tech.