PPI Calculator Instructions: To use the PPI (pixels per inch)
calculator you will need to know one of two things. You must know either the
length and width of the image file, or the number of megapixels and the
aspect ratio of your camera. Enter this information and press calculate. The
PPI calculator will then display the PPI of popular print sizes, or if you
like you can specify a print size and it will also make the calculations for
it. Need a better understanding of PPI?
