Formula

DPMO = (Number of Defects ÷ Number of Defect Opportunities) × 1,000,000

Units

Number of Defects = Total Defects Found
Number of Defect Opportunities = Total Possible Defect Opportunities
Result = Defects Per Million Opportunities

Example

Number of Defects = 20
Number of Opportunities = 50,000

DPMO = (20 ÷ 50,000) × 1,000,000
= 400 DPMO