Aspect Ratio Calculator
Calculate aspect ratio from width and height, or find missing dimension
About This Tool
The Aspect Ratio Calculator helps users determine the width and height of a screen based on its diagonal size and aspect ratio. Ideal for tech enthusiasts, designers, and anyone needing precise measurements.
Enter the diagonal measurement and select an aspect ratio (e.g., 16:9 or 4:3) to calculate the exact dimensions. The tool outputs both width and height values in pixels or inches, depending on your preference.
Use this tool for planning monitor purchases, designing layouts, or setting up video equipment. All calculations are performed locally within your browser; no data is sent or stored.