Screen PPI calculator

PPI that is the number of pixels per inch have. pixels per inch is represented by the number of pixels per inch owned.

Calculate the number of pixels in the diagonal direction (right triangle) with the number of pixels in length and height, and then divide the number of pixels in the diagonal by the screen size is ppi, the formula is expressed as PPI=√(X^2+Y^2 ) / Z (X: length pixels; Y: width pixels; Z: screen size).