Ormaven · Quality calculator
PPM & DPMO Calculator
Separate defective units from individual defects and convert both into comparable per-million quality metrics.
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Defective PPM—
Defects PPM—
Defects / unit—
DPMO—
Quality rate
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The metrics use different denominators; compare like with like.
Who it is for
Quality, production and supplier teams that report defectives, defects or opportunity-based quality metrics.
What you get
Defective PPM, defects PPM, defects per unit and DPMO from one consistent input set.
Use consistent definitions. A defective unit can contain more than one defect. DPMO depends on the number of valid defect opportunities per unit, so comparisons only make sense when opportunity definitions are comparable.