Enter the length (in), the diameter (in), and the number of active coils into the Spring Pitch Calculator. The calculator will evaluate the Spring Pitch.

## Spring Pitch Formula

The following formula is used to calculate the Spring Pitch.

SP = (L-3*D)/NA

Variables:

- SP is the Spring Pitch (in/coil)
- L is the length (in)
- D is the diameter (in)
- NA is the number of active coils

To calculate the spring pitch, subtract 3 times the diameter from the length, then divide by the number of active coils.

## How to Calculate Spring Pitch?

The following steps outline how to calculate the Spring Pitch.

- First, determine the length (in).
- Next, determine the diameter (in).
- Next, determine the number of active coils.
- Next, gather the formula from above = SP = (L-3*D)/NA.
- Finally, calculate the Spring Pitch.
- 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.

length (in) = 5

diameter (in) = .25

number of active coils = 3

SP = (L-3*D)/NA =** ** ?