🎯 Risk Matrix Calculator
| Likelihood | Consequence | ||||
|---|---|---|---|---|---|
| Negligible (1) |
Minor (2) |
Moderate (3) |
Major (4) |
Catastrophic (5) |
|
| 5 Almost Certain | Moderate 5 |
High 10 |
Extreme 15 |
Extreme 20 |
Extreme 25 |
| 4 Likely | Moderate 4 |
High 8 |
High 12 |
Extreme 16 |
Extreme 20 |
| 3 Possible | Low 3 |
Moderate 6 |
High 9 |
High 12 |
Extreme 15 |
| 2 Unlikely | Low 2 |
Moderate 4 |
Moderate 6 |
Moderate 8 |
High 10 |
| 1 Rare | Low 1 |
Low 2 |
Low 3 |
Moderate 4 |
Moderate 5 |
| Likelihood | Severity |
|---|---|
| 1 = Extremely Unlikely | 1 = Very Minor Injury |
| 2 = Unlikely | 2 = First-aid Injury |
| 3 = Possible | 3 = Lost Time Injury |
| 4 = Likely | 4 = Hospital Treatment |
| 5 = Very Probably | 5 = Disabling Injury |
🧾 Risk Score & Action Table
| Risk Level | Score Range | Recommended Action |
|---|---|---|
| Low | 1 – 4 | Acceptable. Maintain current controls. |
| Medium | 5 – 9 | Monitor regularly. Improve controls where possible. |
| High | 10 – 15 | Act immediately. Strengthen risk control measures. |
| Very High | 16 – 25 | Unacceptable. Stop activity until risk is reduced. |
🚀 How to Use the Risk Matrix Calculator – Simple, Fast & Effective
Ready to take control of workplace safety? Follow these 3 easy steps to use the Risk Matrix Calculator:
✅ Step 1: Select Likelihood (1–5)
- Think: How often could this happen?
- From 1 (Rare) to 5 (Almost Certain), pick the chance of the hazard occurring.
✅ Step 2: Select Severity (1–5)
- Ask: How bad could the outcome be?
- Choose from 1 (Minor injury) to 5 (Disabling injury).
✅ Step 3: Click “Calculate Risk”
- Instantly see your Risk Score and its Color-Coded Level:
- 🟢 Low = Monitor
- 🟡 Moderate = Apply controls
- 🔴 Extreme = Take immediate action!
🛠️ Where to Use This Tool:
- ✅ NEBOSH Open Book Exams
- ✅ Safety Audits & Toolbox Talks
- ✅ ISO 45001 & Risk Assessments
- ✅ Construction, Factories, Offices