PPI Calculator
Calculate pixel density and approximate physical pixel size.
What this tool does
Pixel density combines resolution and diagonal size to calculate pixels per inch (PPI). It helps compare sharpness between displays, but perceived clarity also depends on viewing distance, scaling, panel layout and eyesight.
How to use it
Enter the values requested by the calculator and check the result together with the notes shown below it.
Practical example
Use a realistic example from your own setup to compare scenarios. The result is a reference, not a replacement for manufacturer specifications.
How to interpret the result
Treat the result as an estimate whenever real-world factors are not available to the browser. For hardware, network or safety decisions, verify the relevant technical specifications.
Frequently asked questions
What PPI is enough?
It depends on viewing distance. On desktop monitors, around 100–110 PPI gives sharp text; higher density is mostly noticeable up close.
Are PPI and DPI the same?
Not exactly: PPI is the pixel density of a screen, while DPI is dots per inch in printing or a mouse sensor.