Enter the dots per inch into the Calculator. The calculator will evaluate the Lines Per Inch. 

Lines Per Inch Formula

LPI = DPI / 16


  • LPI is the Lines Per Inch (lines/in)
  • DPI is the dots per inch

To calculate Lines Per Inch, divide the dots per inch by 16.

How to Calculate Lines Per Inch?

The following steps outline how to calculate the Lines Per Inch.

  1. First, determine the dots per inch. 
  2. Next, gather the formula from above = LPI = DPI / 16.
  3. Finally, calculate the Lines Per Inch.
  4. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

dots per inch = 20