Is this the same as my mouse DPI?

No. Mouse DPI measures how far the cursor moves per inch of mouse travel and is set in your mouse software. This page measures your display's pixel density.

Why does it show 96 DPI when my screen is sharper than that?

96 is the web's nominal baseline. High-density screens report a pixel ratio (like 2×) on top of it — the detected DPI above is 96 × your pixel ratio.

Around 90–110 PPI is typical for desktop monitors; 200+ is 'retina' territory where individual pixels are hard to see. Higher helps mostly for text sharpness.

DPI Test

Your screen's DPI, resolution, and pixel ratio — detected automatically below.

Your Screen DPI

Detected automatically from your display

Detecting…

Optional: enter your screen size in inches for the exact physical PPI

DPI vs PPI — the 10-second version

Websites see your screen in CSS pixels at a nominal 96 DPI, multiplied by your pixel ratio — that's the detected number above. Physical PPI is how many real pixels fit in an inch of your specific panel, which depends on its size; type your diagonal into the calculator to get it.

FAQ

Is this the same as my mouse DPI?: No. Mouse DPI measures how far the cursor moves per inch of mouse travel and is set in your mouse software. This page measures your display's pixel density.
Why does it show 96 DPI when my screen is sharper than that?: 96 is the web's nominal baseline. High-density screens report a pixel ratio (like 2×) on top of it — the detected DPI above is 96 × your pixel ratio.
What's a good PPI?: Around 90–110 PPI is typical for desktop monitors; 200+ is 'retina' territory where individual pixels are hard to see. Higher helps mostly for text sharpness.