TRIR / TRIFR Calculator

Calculate your Total Recordable Incident Rate (TRIR) — also referred to as Total Recordable Injury Frequency Rate (TRIFR) depending on the standard used — to benchmark your site's or organization's recordable injury/illness performance against a standardized exposure base.

Reporting Standard / Base Hours Determines the standardization multiplier used in the formula.

Number of Recordable Incidents Total OSHA/company-recordable injuries & illnesses in the period.

Total Hours Worked Total exposure hours by all employees in the same period.

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Recordable Incidents per Standardized Hours

Formula Reference

TRIR = (Number of Recordable Incidents × Base Hours) ÷ Total Hours Worked

OSHA (US)	200,000 hrs base (100 FTE / yr)
ISO / Global	1,000,000 hrs base
UK / RIDDOR-style	100,000 hrs base

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TRIR / TRIFR Calculator

Formula Reference

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