Free improvement tool
Sigma level and DPMO calculator
Count how many units you checked, how many ways each could go wrong, and how many defects you found. Everything runs in your browser; nothing is uploaded.
Example from a ward
You audit 500 medicine administrations. Each has 4 checks that could be missed (patient, drug, dose, time). You find 18 missed checks. DPMO = 18 ÷ (500 × 4) × 1,000,000 = 9,000.
