Enter the mean diameter and the total number of coils into the calculator to determine the spring wire length.

## Spring Wire Length Formula

The following equation is used to calculate the Spring Wire Length.

SWL = PI* D * N
• Where SWL is the spring wire length
• D is the mean diameter of each coil
• N is the total number of coils

To calculate the spring wire length, multiply the diameter of the coil by pi, then multiply the result by the number of coils.

## What is a Spring Wire Length?

Definition:

A spring wire length is the total length of a spring if it were stretch linearly. The length depends on the diameter of the coils and the total number of coils.

## How to Calculate Spring Wire Length?

Example Problem:

The following example outlines the steps and information needed to calculate the length of a spring wire.

First, determine the diameter of the coils. The mean diameter for this example is found to be 3 inches.

Next, determine the total number of coils. This spring is found to be 20 coils.

Finally, calculate the spring wire length using the formula above:

SWL = PI* D * N

SWL = 3.14159* 3 * 20

SWL = 188.4954 inches