Screen Resolution Calculator
Enter a resolution and screen size to get pixel density (PPI), total pixels, aspect ratio, and dot pitch.
Free · No sign-up · Runs in your browser
Physical screen size for PPI.
Pixel density
81.6PPI
Total pixels
2.07MP
Aspect ratio
16:9
Dot pitch
0.311mm
HOW IT WORKS
01
Pick or type a resolution
Use a preset like 1080p or enter custom width and height.
02
Add the diagonal size
Enter the screen’s diagonal in inches to compute pixel density.
03
Read the metrics
Get PPI, total megapixels, the simplified aspect ratio, and dot pitch.
Understand any display’s sharpness
Resolution alone does not tell you how sharp a screen looks — a 4K phone and a 4K TV have wildly different clarity because pixel density depends on both the pixel count and the physical size. This calculator combines them into the numbers that actually matter: PPI, total pixels, aspect ratio, and dot pitch.
Why it’s useful
- Buying a monitor — compare sharpness across sizes and resolutions.
- Designing UI — know the real density your work will render at.
- Recording screens — match your capture resolution to the display.
Capturing a high-resolution Mac display? ScreenBuddy records at native resolution and exports up to 4K.
FAQ
Frequently Asked Questions
MORE FREE TOOLS
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