DPI Detector
Measure your display's Dots Per Inch and pixel density accurately.
Detected DPI / PPI
Dots Per Inch
Device Pixel Ratio
Physical vs. Logical Pixels
What is DPI and PPI?
DPI (Dots Per Inch) and PPI (Pixels Per Inch) describe the resolution and pixel density of a display. While often used interchangeably, they have distinct meanings in different contexts.
PPI (Pixels Per Inch)
Refers to the number of individual pixels that can be placed in a line within the span of 1 inch. Higher PPI results in sharper, more detailed images.
DPI (Dots Per Inch)
Originally a printing term, it refers to the number of physical dots of ink on a printed surface. In digital displays, it's often used to describe the scaling factor.
How is DPI detected?
This tool uses a hidden element with a fixed CSS size of 1 inch. By measuring how many pixels that 1-inch element occupies on your specific screen, we can calculate the exact PPI/DPI of your display. We also account for the Device Pixel Ratio (DPR) ensure accuracy on high-density Retina or 4K displays.