Get Email UpdatesThese Six Sigma online calculators help you calculate your process metrics such as DPMO, DPM, Sample Size, Six Sigma.
We have the following calculators:
- DPMO
- DPM
- Sample Size
Click on the buttons to show the Six Sigma Calculator
Number Of Defects:
Number Of opportunities:
Number Of Defect opportunities per Unit:
Click to Calculate DPMO:
Six Sigma:
Number Of Defects:
Sample Size:
Click to Calculate DPM:
Six Sigma:
Confidence Level: 95%
Confidence Interval:
Population:
Click to Calculate Sample Size:
DPMO – Defects Per Million opportunities Calculator
Defects per million opportunities (DPMO) is also known as nonconformities per million opportunities (NPMO).
DPMO is calculated using the below formula:
DPM – Defects Per Million Calculator
DPM is calculated using the below formula:
Sample Size Calculator
Sample Size is calculated using the below formula:
Where CI is the confidence Interval in decimal format. If the Confidence Interval is ±4% then use 0.04
p is Percentage of the sample picking a choice, expressed in decimal. For Sample Size Calculation, we use a p of 0.50
Z value is 1.96 for a Confidence Level of 95%, which is the most commonly used Confidence Level by researchers.A confidence level of 95% means that you are 95% certain about the outcome.
Sample Size Correction For finite Population
The above formula works for bigger populations. For smaller or finite populations, you need to correct the value obtained from the above using the below formula.
Related Tutorial: Understanding defect based six sigma metrics: DPO, DPMO, PPM, DPU, Yield
Free Download: Defect Metrics Calculators in Microsoft Excel Spreadsheet
Download Six-Sigma Calculators for DPO, DPMO, Sample-Size in Excel
5 Comments
very easy to calculate, please
send me please
very good! I like it
Please correct the spelling for “opportunities”. It appears in the page DPMO as “oppurtunities”.
i cannot understand this DPMO please tell me how to calculate DPMO at chemical plant