Screen diagonal
Screen diagonal: use screen width, screen height. Review the formula, worked example and calculation steps.
Inputs
Use the units shown—
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Formula & explanation
Diagonal = √(width²+height²)
Variables & units
- Screen width
- in · minimum 0, maximum 1000000000000
- Screen height
- in · minimum 0, maximum 1000000000000
Worked example
A16 by9 inch rectangle has diagonal√337 inches.
Assumptions
Measures the rectangular display, excluding bezel and curved-surface effects.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
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