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LTI Frequency Calculator

Lost Time Injury Frequency Rate Calculator

Calculate LTIFR
LTIFR Definition

A Lost Time Injury (LTI) is an injury that results in time lost from work. This includes any injury that prevents a worker from performing their normal duties for at least one full day/shift.

LTIFR is one of the most widely used safety performance indicators globally, allowing organizations to benchmark their safety performance against industry standards.

LTIFR Formula

Number of LTIs × 1,000,000


Total man-hours worked

Industry Benchmarks

  • 0 = World Class
  • <1 = Excellent
  • 1-3 = Good
  • 3-5 = Average
  • 5-10 = Below Average
  • >10 = Poor