[DPMO Calculator]
Calculate DPMO and Sigma Level
Enter your inspection data to calculate defects per million opportunities and approximate sigma level. Benchmark your process capability against Six Sigma standards.
Inspection Data
units
Number of characteristics or potential defect types per unit
Quality Results
DPMO
480per million
Sigma Level
4.78σ
Yield
99.952%
Defect Rate
0.0480%
Process Sigma
Sigma Level
4.78σ
Good quality - your process sits between 4 and 5 sigma. Tightening control on key defect opportunities can push you toward world class.
Sigma Level Reference
| Sigma | DPMO | Yield |
|---|---|---|
| 6σ | 3.4 | 99.9997% |
| 5σ | 233 | 99.9767% |
| 4σ | 6,210 | 99.38% |
| 3σ | 66,807 | 93.32% |
| 2σ | 308,538 | 69.15% |
| 1σ | 691,462 | 30.85% |
Sigma Benchmarks
5σ+
World Class
4–5σ
Good
3–4σ
Average
<3σ
Needs Work
How DPMO Works
DPMO = (Defects / (Units × Opportunities)) × 1,000,000
Total Opportunities
Units Inspected
× Opportunities per Unit
Yield
Opportunities − Defects
Total Opportunities
Sigma Level
Interpolated from DPMO
against Six Sigma table
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