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Use the Screen Size Calculator
Screen size is measured diagonally, so width and height depend on aspect ratio as well as inches.
How big is this screen really?
Convert diagonal screen size into approximate width and height for desks, walls and viewing setups.
Assumptions to check
- The aspect ratio is known.
- The calculator estimates display size, not stand, bezel or mount clearance.
- Curved screens and unusual ratios may need manufacturer dimensions.
Quick checklist
- Enter diagonal size.
- Choose aspect ratio.
- Check width and height.
- Compare with desk or wall space.
- Leave room for stand, cables and viewing distance.
Common mistakes
- Assuming a 32-inch screen is 32 inches wide.
- Ignoring aspect ratio.
- Forgetting stand depth and clearance.
Why diagonal size is incomplete
A diagonal number is useful for marketing, but it does not tell you whether a screen fits a desk. Width and height require geometry and aspect ratio.
How to use the result
Compare the calculated width with the actual available space. If the fit is tight, check the manufacturer's full dimensions including stand and bezel.
What to calculate next
Use aspect ratio and image resize tools when the screen question is about content fit rather than physical fit.