Screen size calculator
Find screen width and height in cm from a TV or laptop diagonal in inches.
Formula
width = diagonal × 2.54 × a / √(a² + b²); height = width × b/a
Diagonal (inches) = 32 · Aspect ratio = 16:9
How to use
- Enter the diagonal in inches.
- Choose an aspect ratio.
- Read dimensions in cm.
Examples
- 10 inches at 4:3 gives 20.32 × 15.24 cm.
Frequently asked questions
How large is a 32-inch TV?
The diagonal is 81.28 cm; a 16:9 panel is about 70.84 × 39.85 cm.
Does it include the frame?
No. Only the screen area, excluding bezel and stand.
Are all 21:9 screens identical?
No. This uses exactly 21/9; check the actual panel specification.
Sources
Updated: