Enter the total metric setting of the device and the into the Stitches Per Inch Calculator. The calculator will evaluate the Stitches Per Inch. 

Stitches Per Inch Formula

The following two example problems outline the steps and information needed to calculate the Stitches Per Inch.

SPI = 25.4 / MS

Variables:

  • SPI is the Stitches Per Inch (stitches per inch)
  • MS is the total metric setting of the device 

How to Calculate Stitches Per Inch?

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


  1. First, determine the total metric setting of the device. 
  2. Next, gather the formula from above = SPI = 25.4 / MS.
  3. Finally, calculate the Stitches 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.

total metric setting of the device = 15

SPI = 25.4 / MS = ?