One number, many inputs
Leadership packs often want a single composite safety score. A transparent approach is a weighted average of normalised metrics (each already scaled 0–100):
Score = Σ (weight × metric) ÷ Σ weights
Keep weights documented and stable so trends mean something.
Composite Safety Score Calculator
Composite · weighted 0–100
Combine normalised LTIFR, TRIFR, near-miss, and audit scores (each 0–100) into one weighted dashboard number.
Formula: Score = Σ (weight_i × metric_i) ÷ Σ weights
- Publish weights with the score so trends stay honest.
- Show components beside the composite on dashboards.
- Do not let volume-only near-miss scores game the result.
Frequently asked questions
Should LTIFR dominate?
Usually not — balance lagging rates with leading indicators (audits, near-miss quality).
How do I normalise LTIFR to 0–100?
Use your own banding (e.g. 0 → 100, industry average → 50). Enter already-scored values here.
Gaming the score?
If near-miss “scores” reward volume without quality, people will game it — define rules carefully.
Replace detailed KPIs?
No. Show the composite and the components side by side.
