Sigma Level (DPMO) Calculator
Convert your defect data into defects per million (DPMO) and a sigma level.
CurrentTarget
DPMO
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Yield
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Sigma level
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Sector target: 4
6σ = 3.4 DPMO. Industry average is often 3–4σ.
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About this metric
What is it?
Converting your defect data into defects per million opportunities (DPMO) and a sigma level — process quality maturity.
How is it calculated?
DPMO = defects / (units × opportunities) × 1,000,000; sigma is derived from yield via the normal distribution (with the 1.5σ shift).
How to interpret it?
6σ = 3.4 DPMO; industry average is 3–4σ. Each sigma level reduces defects roughly tenfold.
How to improve it?
Use DMAIC to find root cause and prevent defects; focus on the highest-defect opportunity.
Let's improve these numbers on the field
Measuring is the first step; lasting gains come from implementing together on the field.
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