Safety Calculators

Safety reporting only improves things when the rates are comparable — the same injury counted the same way, over the same hours, across sites and years. These calculators standardise that counting, turning incident logs into frequency, severity and cost figures that can actually be compared.

Five accidents in a year sounds small until you ask the only question that matters: small compared with what?

The invoice an accident sends your business is never the whole bill.

How many people can a room safely hold, and how many can actually get out?

The severity rate answers a different question from the incident rate: not how often people get hurt, but how many days of work those injuries cost.

An injury count on its own says little, because a plant with 2,000 workers will log more injuries than a workshop with 12 even when the workshop is the riskier place to work.

TRIR tells you how often people get hurt. The DART rate tells you how badly.

Raw crime counts mislead: a big city will almost always record more offenses than a small town, even when the town is less safe per person.

Reaction distance is the ground your vehicle covers between the moment you spot a hazard and the moment your foot reaches the brake.

A pressure test stores energy in the test piece, and a rupture turns that energy into fragments and a pressure wave in an instant.