PPI Calc - DPI Calculator

This PPI calculator, also known as Pixels Per Inch calculator, determines the resolution of your display by analyzing its dimensions and pixel count.

• In this application, you will gain insight into PPI, delve into the distinctions between PPI vs DPI using a DPI explanation. Additionally, you can explore information about dot pitch and its decline in usage. Naturally, this tool offers guidance on how to calculate PPI and how to classify resolution based on PPI.

PPI Definition: What is PPI?

• PPI is a commonly used term in online tech communities, particularly those dedicated to display technology and smartphones. The precise definition of PPI is Pixels Per Inch, representing the pixel density of a screen or digital image. This density is calculated by determining how many pixels can be accommodated on a one-inch line.
• It is based on the principle that screens and images, despite being 2D, typically maintain consistent density along their two primary axes. There are alternative measurements for pixel density, such as pixels per square inch, which involve computing the area of the screen as a rectangle. It is also important to recognize that our pixel density calculator assumes square pixels.
• It's essential to consider that when calculating PPI, a physical object with fixed dimensions is required, not a virtual file. For instance, screens or printed images possess a set physical size making it practical to determine the number of pixels per inch they contain. Conversely, in the case of a digital image on a computer, PPI cannot be accurately derived due to variations in size caused by zoom levels and screen dimensions.