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Pages Per Inch Calculator

Formula

The formula to calculate the Pages Per Inch (PPI) is:

$PPI = \frac{1}{PT}$

Where:

Pages Per Inch (PPI): A measure of the number of pages that fit into a one-inch stack. It is commonly used in the printing and publishing industries to estimate the thickness of books and documents based on the paper’s thickness.
Paper Thickness (PT): The thickness of a single sheet of paper, measured in inches.
Significance: Understanding PPI is important for logistics, packaging, and ensuring that a book’s spine can accommodate the number of pages.

Let's say the paper thickness (PT) is 0.005 inches. Using the formula:

$PPI = \frac{1}{0.005} = 200$

So, the Pages Per Inch (PPI) is 200.