Free FMEA / RPN Calculator
Assess risk systematically with a free Failure Mode and Effects Analysis calculator. FMEA is a structured approach to identifying potential failures in a product, process, or system — and prioritizing them by risk. For each failure mode, you rate Severity, Occurrence, and Detection on a 1–10 scale to compute a Risk Priority Number (RPN). FMEA naturally follows a 5 Whys analysis: once you have identified the root cause, use FMEA to evaluate the risk and decide which corrective actions to implement first.
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Automatic RPN Calculation
Enter Severity, Occurrence, and Detection scores — the Risk Priority Number is computed instantly. No formulas to remember.
Color-Coded Severity Matrix
Rows are highlighted green, yellow, or red based on RPN thresholds so you can see high-risk items at a glance.
Action Threshold Recommendations
Built-in guidance suggests when corrective action is required, recommended, or optional based on industry-standard RPN ranges.
CSV / PDF Export
Download your FMEA table as a CSV for spreadsheets or a professionally formatted PDF for reports and audits.
Frequently asked questions
What is FMEA?
FMEA (Failure Mode and Effects Analysis) is a proactive risk assessment method. You list every way a product, process, or system could fail (failure modes), assess the impact (Severity), likelihood (Occurrence), and detectability (Detection) of each, then multiply the three scores to get a Risk Priority Number (RPN). Higher RPNs get prioritized for corrective action.
How is the Risk Priority Number (RPN) calculated?
RPN = Severity × Occurrence × Detection. Each factor is scored 1–10. Severity measures impact on the end user, Occurrence measures how often the failure cause is expected to happen, and Detection measures the probability that current controls will catch the failure. RPN ranges from 1 (minimal risk) to 1,000 (highest risk).
How does FMEA fit into a 5 Whys workflow?
5 Whys helps you identify the root cause of a known problem. FMEA comes next: once you understand the failure mode and its root cause, you score the risk using Severity, Occurrence, and Detection. This helps you prioritize corrective actions based on actual risk rather than gut feeling, making your entire root cause analysis process more rigorous.
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