Enter the peak stress and the nominal or average stress into the Stress Concentration Factor Calculator. The calculator will evaluate the Stress Concentration Factor.

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## Stress Concentration Factor Formula

The following two example problems outline the steps and information needed to calculate the Stress Concentration Factor.

Kt = PS / NS

Variables:

- Kt is the Stress Concentration Factor ( )
- PS is the peak stress
- NS is the nominal or average stress

To calculate the stress concentration factor, divide the peak stress by the nominal stress.

## How to Calculate Stress Concentration Factor?

The following steps outline how to calculate the Stress Concentration Factor.

- First, determine the peak stress.
- Next, determine the nominal or average stress.
- Next, gather the formula from above = Kt = PS / NS.
- Finally, calculate the Stress Concentration Factor.
- 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.

peak stress = 5000

nominal or average stress = 4000

Kt = PS / NS** **= ?