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Calcimator

Six Sigma Level Calculator

Calculate sigma level, DPMO, defect rate, and process yield from defects, opportunities, and units. Includes performance level assessment and COPQ estimate.

Inputs

Results

Sigma Level

4.25

Performance Level

Good (Industry Average)

DPMO3,000
Process Yield99.7%
Defect Rate0.3%
Defects per Opportunity0
Total Opportunities5,000
Est. COPQ Range10-15% of revenue
How to Use This Calculator
  1. Enter Number of Defects, Opportunities per Unit, and Units Inspected.
  2. Review Sigma Level and Performance Level.
  3. Use DPMO and Process Yield (%) to inform your decision.
  4. Use the chart to visualize the results and explore different scenarios by adjusting inputs.

How the result changes with Units Inspected

Units InspectedSigma LevelPerformance Level
1,000,0016.03World Class
3,500,0016.28World Class
6,500,0006.41World Class
9,000,0006.47World Class

What each input means

Number of Defects
Total number of defects found across all units inspected.
Opportunities per Unit
Number of chances for a defect to occur on each unit. E.g., solder joints per PCB.
Units Inspected
Total number of units inspected or produced.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    Number of Defects = 15, Opportunities per Unit = 5, Units Inspected = 1000 = 3 input(s) provided
  2. Calculate Sigma Level
    Sigma Level = Math
    4.25 = 4.25
  3. Calculate Performance Level
    Good (Industry Average) = Good (Industry Average)
  4. Calculate DPMO
    DPMO
    3000 = 3000
  5. Calculate Process Yield
    Process Yield
    99.7 = 99.7

Engine last updated . Checked against 2 independently-derived tests — how we verify calculators.

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