Ormaven · Quality risk tool
FMEA RPN Calculator
Calculate RPN from Severity, Occurrence and Detection without turning the number into a false universal acceptance limit.
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RPN—
Severity—
Occurrence—
Detection—
Prioritisation signal
—
Do not interpret RPN alone as a universal acceptance threshold.
Who it is for
FMEA teams that need a quick arithmetic check or a lightweight discussion aid for S, O and D ratings.
What you get
RPN, the three input ratings and an interpretation that keeps high severity visible instead of relying only on the product of the ratings.
RPN = Severity × Occurrence × Detection is a legacy prioritisation aid, not a universal risk-acceptance threshold. Current FMEA methods may use additional prioritisation logic such as Action Priority. Follow the method required by your customer or organisation.