How to Use TRIR Calculator
The TRIR Calculator turns recordable incidents and total work hours into a comparable safety metric. Enter the values and the TRIR Calculator displays TRIR plus a quick benchmark zone.
- Enter Incident Count — Total recordable incidents in the reporting period.
- Enter Hours Worked — Sum of all employee, contractor, and temp hours.
- Read TRIR — Lower is better; benchmark against industry averages.
Formula & Theory - TRIR Calculator
The TRIR Calculator uses the OSHA-standard formula:
TRIR = (Number of Recordable Incidents × 200,000) / Total Hours Worked
Equivalent FTEs = Total Hours Worked / 2000| Symbol | Meaning |
|---|---|
| Recordable Incidents | Injuries / illnesses requiring more than first aid |
| 200,000 | 100 FTEs × 2,000 hours/year |
| TRIR | Incidents per 100 FTEs per year |
Assumptions and Limits
The TRIR Calculator counts all recordable incidents equally; pair it with severity metrics (DART, LTIFR) for a fuller view.
Use Cases for TRIR Calculator
The TRIR Calculator is useful for:
- EHS reporting — Monthly, quarterly, annual safety dashboards.
- Bidder qualification — Many contracts require TRIR disclosure.
- Site comparison — Benchmark different sites or business units.
- Continuous improvement — Track TRIR trends after safety interventions.
Run the TRIR Calculator alongside leading indicators (audits, training) for a complete safety program.