Six Sigma Calculators
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Practical calculators for DPMO, process capability, yield, and rolled throughput yield — verified against standard Six Sigma tables. Use these during training sessions or for real-world process analysis.
DPMO = (Defects × 1,000,000) ÷ (Units × Opportunities)Sigma Level = Φ-1(1 − DPMO÷1,000,000) + 1.5
Cp = (USL − LSL) ÷ (6 × σ)Cpu = (USL − μ) ÷ (3 × σ)Cpl = (μ − LSL) ÷ (3 × σ)Cpk = min(Cpu, Cpl)
Yield = ((Total − Defective) ÷ Total) × 100
Enter the yield (as %) for each process step. Add or remove steps as needed.
RTY = Y1 × Y2 × ... × YnEach Y value is the decimal yield (e.g. 98% = 0.98)
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