Monitor measurement calculator
Monitor Size Checker
Estimate physical monitor width, height, PPI, and scaling comfort from diagonal size and resolution.
Check monitor size and sharpness
Enter your monitor diagonal and resolution to estimate physical dimensions and pixel density.
Important: A browser cannot detect the physical inch size of your monitor automatically. Enter the diagonal from the product label or monitor specs for the best estimate.
Estimated physical size
23.5 × 13.2 in
27 in diagonal, 16:9 aspect ratio
108.8 PPI
16:9
310 sq in
Balanced
How to use this result
Physical monitor size helps compare desk fit, while PPI helps compare text sharpness. For many users, 24-inch 1080p, 27-inch 1440p, and 32-inch 4K are comfortable pairings.
Use the estimated width to compare against available desk space.
Higher PPI generally means sharper text and UI, especially at close viewing distances.
This calculator estimates physical size from the diagonal you enter. It does not scan or detect your actual monitor inches.
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Related guides
Use these supporting guides to understand the tool result and next testing steps.
Related tools
Continue with another ScreenMetricLab utility.