DPMO Calculator
Calculate defects per million opportunities from consistent inspection counts.
A QUICK WALKTHROUGH
How to use this tool
- Enter the values below.
- DPMO = defects / (units × opportunities per unit) × 1,000,000. Counts must be safe integers; units and opportunities per unit >0, defects ≥0 and ≤ total opportunities. Each predefined opportunity is counted once and may have at most one defect. Use the same opportunity definition for every inspected unit. This is a count statistic, not a sigma level or quality certification.
- Calculate and review the result.
Formula and scope
DPMO = defects / (units × opportunities per unit) × 1,000,000. Counts must be safe integers; units and opportunities per unit >0, defects ≥0 and ≤ total opportunities. Each predefined opportunity is counted once and may have at most one defect. Use the same opportunity definition for every inspected unit. This is a count statistic, not a sigma level or quality certification.
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GOOD TO KNOW
Common questions
How is it calculated?
DPMO = defects / (units × opportunities per unit) × 1,000,000. Counts must be safe integers; units and opportunities per unit >0, defects ≥0 and ≤ total opportunities. Each predefined opportunity is counted once and may have at most one defect. Use the same opportunity definition for every inspected unit. This is a count statistic, not a sigma level or quality certification.