Screen dimensions
Calculate physical screen width and height from diagonal and aspect ratio.
How this works
Scale the aspect-ratio sides so their hypotenuse equals the screen diagonal.
Example
Using the example inputs, screen width is 23.53254 in.
- Diagonal
- 27 in
- Aspect width
- 16
- Aspect height
- 9
- Screen width
- 23.53254 in
Scope and assumptions
Active display rectangle only, excluding bezels; curved-screen dimensions may differ.
OpenStax mathematics reference