Screen Size Calculator
Find the width and height of a screen from its diagonal size and aspect ratio.
About the Screen Size Calculator
Built for Pakistani users, the Screen Size Calculator turns a fiddly manual calculation into a one-glance result you can trust for planning and everyday decisions.
Screen decisions — size, resolution, pixel density and viewing distance — shape how comfortable a phone, laptop or TV is to use. This Screen Size 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.
For the most accurate outcome from the Screen Size Calculator, keep the editable rates and defaults up to date with current figures before reading the result.
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
How do I measure a phone screen?
Screen size is the diagonal measurement in inches. For a 6.5-inch 19.5:9 phone, the visible area is roughly 6.0 × 2.8 inches.
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.