TRIFR Calculator

TRIFR = (Total Recordable Injuries x 1,000,000) / Total Hours Worked. The 1,000,000-hour multiplier is the international standard used outside the US. A site with 8 recordables and 1,000,000 hours has a TRIFR of (8 x 1,000,000) / 1,000,000 = 8.0.

A recordable injury is any work-related injury or illness requiring more than basic first aid. This includes: lost-time injuries (one or more shifts lost), restricted duty cases, job transfer cases, medical treatment beyond first aid (sutures, prescription medication, physical therapy, etc.), all fatalities, and significant diagnoses (hearing loss above threshold, occupational illness). Pure first-aid cases (band-aids, single dose of OTC medication, ice packs) are NOT recordable.

Below 5.0 is good. Between 5.0 and 10.0 is industry-typical for many sectors. Above 10.0 indicates above-average concern. Above 20.0 is critical. Always benchmark against your specific industry: Safe Work Australia 2023 data shows mining around 8 to 10, construction around 12 to 15, manufacturing around 10 to 14, transport and warehousing around 18 to 22.

TRIFR uses a 1,000,000-hour multiplier (international convention, used in the UK, AU, NZ, IE, ZA, and globally). TRIR uses a 200,000-hour multiplier (US OSHA convention). Both measure the same thing (total recordable injury frequency) but on different scales. TRIFR = TRIR x 5 for the same incident profile. This calculator returns TRIFR with the TRIR equivalent shown alongside.

TRIFR counts all recordable injuries (lost-time + restricted duty + medical treatment beyond first aid). LTIFR counts only lost-time injuries (cases causing one or more shifts lost). TRIFR is always higher than LTIFR for the same workplace. Both use the 1,000,000-hour multiplier internationally. TRIFR catches more leading-indicator data; LTIFR catches more severe outcomes. Most operators report both.

No. The formula (Recordables x 1,000,000) / Hours is identical in the UK, Australia, New Zealand, Ireland, South Africa, Canada, and globally. What changes is the reporting body (HSE in the UK, Safe Work Australia in AU, WorkSafe NZ, HSA in Ireland, etc.) and minor definition nuances around what counts as a recordable. The US is the exception: OSHA uses TRIR per 200,000 hours instead. This calculator returns TRIFR for every country selected and shows the US TRIR equivalent alongside.

Most modern operators (mining, oil and gas, construction, energy, infrastructure) report TRIFR as the headline because it captures more leading-indicator data: a high TRIFR with a low LTIFR means injuries are happening but being managed quickly. A low TRIFR with a high LTIFR means rare but serious injuries. Both numbers together tell the full story. ESG reporting frameworks increasingly require TRIFR.

Same as LTIFR: include them if you supervise the work and count their hours in your denominator. The principle is parity. Major operators report blended TRIFR including all on-site contractors and the workforce mix is usually disclosed in the footnote.

Less commonly than TRIR, which is the OSHA standard per 200,000 hours. However, US operators in mining, oil and gas, and chemical industries, plus US subsidiaries of international companies (BHP, Rio Tinto, Shell, etc.) report TRIFR alongside TRIR for global benchmarking. ESG investor disclosures increasingly favour TRIFR for international comparability.

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