LTIFR Calculator

LTIFR = (Lost Time 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 3 lost-time injuries and 600,000 hours has an LTIFR of (3 x 1,000,000) / 600,000 = 5.0. World-class performers report LTIFR below 1.0.

World-class is below 1.0. Below 5.0 is good. Between 5.0 and 10.0 is industry-average for many sectors. Above 10.0 indicates above-average concern. Above 20.0 is critical and indicates systemic safety gaps. Always benchmark against your specific industry rather than the all-industry figure: Safe Work Australia mining averages around 4 to 5; construction around 6 to 8; transport and warehousing around 10 to 12.

LTIFR uses a 1,000,000-hour multiplier (international convention). LTIR uses a 200,000-hour multiplier (US OSHA convention). Both measure the same thing (lost-time injury frequency) but on different scales. LTIFR = LTIR x 5 for the same incident profile. This calculator returns LTIFR with the LTIR equivalent shown alongside for cross-reference.

LTIFR counts only lost-time injuries (cases causing one or more shifts lost after the day of injury). TRIFR counts all medically treated recordable injuries plus lost-time injuries. TRIFR is always higher than LTIFR for the same site because it captures more cases. Both use the 1,000,000-hour multiplier internationally. Use the TRIFR Calculator for total recordables.

No. The formula B = (LTIs x 1,000,000) / Hours is the same 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 the statutory reporting thresholds (RIDDOR in the UK requires reporting for 7-day-plus absences; AS/NZS 1885.1 governs Australia). The US is the exception: US OSHA uses LTIR per 200,000 hours instead. This calculator returns LTIFR for every country selected and shows the US LTIR equivalent alongside.

Sum all hours actually worked by every employee during the reporting period: regular time, overtime, and any contractor hours that you supervise on site. Do NOT include vacation, sick leave, statutory holidays, or other paid time not worked. Most employers pull this from payroll. A 100-person workforce averaging 2,000 productive hours per worker logs 200,000 total hours per year.

Generally, a work-related injury or illness causing one or more shifts lost after the day of injury. The day of the incident itself is not counted. Definitions vary slightly by jurisdiction: AS/NZS 1885.1 (Australia and NZ) requires one or more full shifts lost; HSE (UK) statutory reporting under RIDDOR requires more than 7 consecutive days; OSHA (US) requires at least one full day away from work. For internal LTIFR tracking, the AS/NZS one-shift-lost definition is most common internationally.

Yes if you supervise the work and count their hours in your denominator. The principle is parity: whatever workforce you count in total hours, you must also count their injuries in the numerator. Most major operators (mining, energy, construction) report blended LTIFR including all on-site contractors.

Less commonly than in ANZ, UK, and EU. US OSHA reporting uses LTIR per 200,000 hours instead. However, US-based multinationals operating in mining, oil and gas, or with international parent companies often report LTIFR alongside LTIR for global benchmarking. This calculator returns LTIFR for US-selected reporting and displays the LTIR equivalent for comparison with OSHA Form 300A.

Yes, embedding the LTIFR Calculator is free. Hit the "Embed" button on this page, adjust the width, height, and theme, then grab the iframe code. It works on WordPress, Wix, Squarespace, Shopify, and plain HTML pages. No registration needed. Full instructions at calculory.com/services/embed-calculators.