Screen Dimensions Calculator
Find a screen’s width and height.
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
This calculator uses the Pythagorean theorem together with an aspect ratio (like 16:9 or 21:9) to split a screen's diagonal measurement into its actual width and height — the diagonal number alone doesn't tell you how wide or tall a screen physically is.
It's used when shopping for a TV or monitor to check whether it will physically fit a piece of furniture or wall space, by home theater and cinema planners figuring out projector throw distances, and by developers or designers reasoning about display dimensions.
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