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X3 OSHAFree tool · No email neededBLS incidence rate formula

Free TRIR and DART Rate Calculator

Type in the totals from your OSHA 300A and your hours worked. You get your total recordable incident rate (TRIR), DART rate and days-away rate, side by side with the latest Bureau of Labor Statistics average for your industry.

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Requirements X3 OSHA keeps in view
  • 1910.1200(e)Written hazard communication program
  • 1910.178(l)Powered industrial truck operator training
  • 1910.38Emergency action plans
  • 1910.147Control of hazardous energy
  • 1910.132(d)PPE hazard assessment
  • 1904.39Reporting fatalities and severe injuries
  • 1910.157Portable fire extinguishers
  • 1910.22Walking-working surfaces
  • 1910.212Machine guarding
  • 1910.134Respiratory protection
  • 1910.95Occupational noise exposure
  • 1910.146Permit-required confined spaces
01

Your Numbers

Take them from your OSHA 300A for the same year. Rates use the BLS formula: cases × 200,000 ÷ hours worked. 200,000 is 100 full-time workers for a year.

From the 300A. All employees, the whole year.
Used only when hours are blank: estimates 2,000 hours each.
02

Your Rates

Enter your recordable cases and your hours worked.

The Rule Behind It

What OSHA Asks For, Paragraph by Paragraph.

The tool follows these rules. Read the full text on eCFR before you rely on it: this is decision support, not legal advice.

BLS incidence rate
Rate = number of cases x 200,000 / total hours worked by all employees. 200,000 is 100 full-time workers at 40 hours a week for 50 weeks.
29 CFR 1904.32(b)(2)(i)
Your 300A column totals give the case counts: G deaths, H days away, I job transfer or restriction, J other recordable cases.
TRIR
All recordable cases: columns G + H + I + J. BLS calls it the total recordable cases (TRC) rate.
DART
Cases with days away, restriction or job transfer: columns H + I.
DAFW
Cases with days away from work: column H.
29 CFR 1904.32(b)(2)(ii)
The 300A also carries the annual average number of employees and the total hours worked by all employees on the log. Those hours are the bottom of the rate.
Straight Answers

Questions About the TRIR and DART Rate Calculator.

Have one that is not here? Ask X3, or write to us and a person will answer.

What is a good TRIR?
Lower than your industry average is a start, but one serious case can move a small site's rate a long way. Track it year over year and look at the cases behind it, not just the number.
Where do the averages come from?
The Bureau of Labor Statistics Survey of Occupational Injuries and Illnesses, 2024 data, released January 22, 2026. We show only the rows we hold; for your own NAICS code, look it up on bls.gov.
What if I do not know my hours worked?
Use your average number of employees and the tool estimates 2,000 hours each. Your real hours from payroll give a truer rate.
Does OSHA use these rates?
OSHA uses DART and days-away rates when it picks sites for some targeted inspections, and many customers ask for TRIR before they award work.
Is my data sent anywhere?
No. The math runs in your browser.
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X3 Sentinel works out these rates for every site from the cases in X3 Incidents and keeps the BLS comparison beside them all year. Free to create. No card needed. Pick a plan when you are ready to use it on your company.

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