DPI Calculator
Calculate the pixel density (DPI/PPI) of a screen from its resolution and size.
About the DPI Calculator
The DPI Calculator is a free, private tool that runs entirely in your browser — your inputs never leave your device, and the answer appears the instant you enter them.
Screen decisions — size, resolution, pixel density and viewing distance — shape how comfortable a phone, laptop or TV is to use. This DPI Calculator computes one of these display figures so you choose the right device.
The calculation applies the standard display metrics: resolution in pixels, aspect ratio, pixel density (PPI), and the viewing distances recommended for TVs and monitors.
For TV buyers in Pakistan, the size-to-distance relationship matters most: a 55-inch TV needs a viewing distance of roughly 2–3 metres. Sitting too close to a large screen, or too far from a small one, ruins the experience.
Pixel density (PPI) explains why a small phone screen looks sharp while a large TV at the same resolution looks soft. This calculator makes those comparisons concrete.
Bookmark the DPI Calculator for the next time you need it, and explore the rest of GuruAlpha's 1,200+ calculators for related everyday maths.
How to use the screen calculator
- 1
Enter the screen size, resolution or distance as labelled.
- 2
Read the calculated metric — PPI, aspect ratio or recommended distance.
- 3
Use the result when comparing devices.
Frequently Asked Questions
What is a good PPI for a phone?
Phones at 400+ PPI look effectively pixel-free to the naked eye. Most modern flagships run 400–500 PPI.
What is a good pixel density (PPI)?
For phones, 300+ PPI looks sharp to most eyes. For monitors, 90–110 PPI is typical at normal viewing distance; for TVs viewed from 2–3 metres, 60–80 PPI is sufficient.