SAFETY PERFORMANCE CALCULATOR
LTIFR Calculator
Calculate Lost Time Injury Frequency Rate instantly and understand exactly how the result was derived.
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Enter your data
Use figures from the same reporting period and population.
UNDERSTAND THE METRIC
What does LTIFR tell you?
LTIFR normalizes Lost Time Injuries against exposure hours, helping compare performance across reporting periods or operations when the same methodology is used.
Use consistent scope
The injury count and hours worked should cover the same workforce and reporting period.
State the multiplier
A rate per 1,000,000 hours is not directly comparable with a rate calculated per 200,000 hours.
Use context
LTIFR is a lagging indicator. Review it alongside leading indicators and critical-control performance.
WORKED EXAMPLE
LTIFR = 0.502 LTIs over 4,000,000 hours
(2 × 1,000,000) ÷ 4,000,000
Professional note: Reporting definitions and normalization factors can vary between organizations, clients and jurisdictions. Confirm the methodology required by your applicable reporting framework before using the result for formal reporting.