Workplace Incident Rate Calculator

Calculate your OSHA recordable incident rate (TRIR) and DART rate, then benchmark against
your industry. Based on the OSHA formula: (incidents x 200,000) / total hours worked.

Input Method

Total Hours Worked
Employees (estimate hours)

Total Hours Worked (year)

Number of Employees

Total Recordable Incidents

DART Cases

DART

Industry Sector

Construction (TRIR 2.5 / DART 1.8)
Manufacturing (TRIR 2.1 / DART 1.3)
Healthcare (TRIR 3.2 / DART 1.9)
Retail (TRIR 2.0 / DART 1.1)
Office / Admin (TRIR 0.7 / DART 0.4)
Transportation (TRIR 3.5 / DART 2.4)
Utilities (TRIR 1.4 / DART 0.9)

Calculate Rates

TRIR & DART Results

Understanding TRIR and DART

TRIR (Total Recordable Incident Rate) counts all OSHA-recordable injuries and
illnesses per 100 full-time equivalent workers. An OSHA-recordable incident is any work-related
injury or illness that results in days away from work, restricted work, job transfer, medical
treatment beyond first aid, loss of consciousness, or diagnosis of a significant illness by a
healthcare professional.

DART (Days Away, Restricted, or Transferred Rate) is a subset of TRIR that
counts only the more severe incidents — those resulting in days away from work, job restrictions,
or job transfers. A lower DART relative to TRIR suggests less-severe incidents overall.

More Calculators

Browse All 132 Free Calculators at National Calculator Authority