FMEA RPN Calculator & Risk Matrix
Calculate Risk Priority Numbers (Severity × Occurrence × Detection) and prioritize failure modes per AIAG-VDA FMEA standards.
Core Formula
RPN = Severity × Occurrence × Detection (1-10 each, max 1000)
Governing Standards
- AIAG & VDA FMEA Handbook — 2019
- SAE J1739
- IEC 60812 — FMEA Techniques
Frequently Asked Questions
What is an acceptable RPN score?
There is no universal threshold; however, RPNs above 100–125 typically warrant corrective action. The AIAG/VDA 2019 approach uses Action Priority (AP) levels instead of RPN thresholds.
What is the difference between Design FMEA and Process FMEA?
DFMEA analyzes product design failure modes. PFMEA analyzes manufacturing/assembly process failure modes. Both use the same Severity × Occurrence × Detection rating framework.