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

To calculate stitches per inch, divide 25.4 by the metric setting of the device.

## How to Calculate Stitches Per Inch?

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

- First, determine the total metric setting of the device.
- Next, gather the formula from above = SPI = 25.4 / MS.
- Finally, calculate the Stitches Per Inch.
- 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** **= ?