Free Tool
Risk Rating Calculator
Calculate risk ratings using the standard 5x5 risk matrix. Enter likelihood and severity to get your risk score.
Risk Rating Calculator
Could occur sometime
12345
Medical treatment required
12345
Risk Score
9
3 (Likelihood) × 3 (Severity) = 9
Medium Risk
Additional controls recommended
5x5 Risk Matrix
Standard risk assessment matrix used in health and safety
| SEVERITY | |||||
|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | |
| LIKELIHOOD | |||||
| 5 | 5 | 10 | 15 | 20 | 25 |
| 4 | 4 | 8 | 12 | 16 | 20 |
| 3 | 3 | 6 | 9 | 12 | 15 |
| 2 | 2 | 4 | 6 | 8 | 10 |
| 1 | 1 | 2 | 3 | 4 | 5 |
Risk Levels Explained
Low (1-4)
Acceptable risk. Monitor and maintain existing controls.
Medium (5-9)
Additional controls recommended. Reduce risk where reasonably practicable.
High (10-15)
Significant controls required before work can proceed.
Extreme (16-25)
Do not proceed. Comprehensive controls essential.
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