Enter the final length after stretching and the original length before stretching into the calculator to determine the stretch factor. This calculator can also evaluate any of the variables given the others are known.

## Stretch Factor Formula

The following formula is used to calculate the stretch factor.

SF = L / L0

Variables:

- SF is the stretch factor L is the final length after stretching (inches, cm, etc.) L0 is the original length before stretching (inches, cm, etc.)

To calculate the stretch factor, divide the final length after stretching by the original length before stretching. The result is the stretch factor, which indicates how much the length has increased due to stretching.

## What is a Stretch Factor?

A stretch factor, in the context of mathematics and physics, refers to the degree by which a shape or object is stretched, usually in one direction. It is a scalar quantity that measures the change in size or length of an object when it undergoes a transformation, such as dilation or contraction. A stretch factor greater than 1 indicates an expansion, while a stretch factor less than 1 signifies a contraction.

## How to Calculate Stretch Factor?

The following steps outline how to calculate the Stretch Factor.

- First, determine the final length after stretching (L) in the desired unit of measurement (inches, cm, etc.).
- Next, determine the original length before stretching (L0) in the same unit of measurement (inches, cm, etc.).
- Next, gather the formula from above: SF = L / L0.
- Finally, calculate the Stretch Factor.
- After inserting the values for L and L0 into the formula, calculate the result.

**Example Problem:**

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

Final length after stretching (L) = 10 inches

Original length before stretching (L0) = 8 inches