TRIR Calculator: Total Recordable Incident Rate & DART Rate
Calculate OSHA safety metrics including TRIR (Total Recordable Incident Rate) and DART (Days Away, Restricted, or Transferred) rates to track safety performance, meet compliance requirements, and benchmark against industry standards.
What is TRIR?
TRIR stands for Total Recordable Incident Rate. It measures the number of OSHA recordable incidents per 100 full-time employees over a specified time period. This safety metric helps organizations track their safety performance and compare it to industry standards.
TRIR = (OSHA recordable cases × 200,000) ÷ total hours worked
The 200,000 figure represents 100 full-time employees working 40 hours a week for 50 weeks a year, so rates compare fairly across companies of any size.
TRIR & DART Rate Calculator
Use this free OSHA TRIR calculator to determine your Total Recordable Incident Rate and DART rate. Enter your company's employee count, total hours worked, and incident data to calculate these standardized safety metrics and compare your performance against industry benchmarks.
Total number of employees in the organization or project
Total hours worked by all employees during the period
Number of OSHA recordable injuries and illnesses
Number of incidents resulting in days away, restricted work, or job transfer
Results
* Rates are based on 100 full-time employees working 40 hours/week, 50 weeks/year (200,000 hours).
Compare your rates to industry averages or historical data to assess performance.
How to calculate TRIR and DART
TRIR counts all recordable cases. DART counts the recordable cases involving days away, restricted work, or job transfer. A DART case is also part of TRIR; do not count it twice.
TRIR = recordable cases × 200,000 ÷ hours worked
DART = DART cases × 200,000 ÷ hours worked
Use cases and hours from the same establishment and period. Count actual hours worked, including overtime; exclude vacation and other paid time off. Employee count provides context and does not directly enter the formula. BLS calculation method.
Worked example — illustrative data
With 3 recordable cases, 1 DART case, and 240,000 hours, TRIR = 2.50 and DART = 0.83. If the correct hours were 200,000, the results would be 3.00 and 1.00. Check the reporting period and hours before comparing.
What the result means
There is no universal “good” TRIR grade. Compare the same NAICS industry, year, and scope. A low rate does not prove hazards are controlled; underreporting can also reduce the figure. Review controls, hazard reports, and investigations alongside rates.
Why size matters
Example: one case in 20,000 hours produces TRIR = 10.00; one case in 200,000 hours produces 1.00. This demonstrates sensitivity, not a proven difference in the quality of the two safety programs. For several years, sum cases and hours before calculating; do not take an unweighted average of rates.
Recordkeeping: US OSHA scope
This calculator does not determine whether a case is recordable. Apply work-relatedness, new-case, and recording criteria first. Exemptions and submission obligations depend on the establishment and industry.
- 29 CFR 1904.7: general recording criteria
- OSHA 300, 300A, and 301 forms and guidance
- Injury Tracking Application: check electronic submission requirements
The Spanish translation does not adapt these rules to Mexico or another country. Check local requirements. This is an educational resource without an identified independent professional review. Editorial policy.
Industry comparisons: BLS 2024 data
| Industry | NAICS | TRIR | DART |
|---|---|---|---|
| Private industry (all) | — | 2.3 | 1.4 |
| Construction | 23 | 2.2 | 1.3 |
| Manufacturing | 31–33 | 2.7 | 1.7 |
| Retail trade | 44–45 | 3.0 | 1.8 |
| Transportation and warehousing | 48–49 | 4.4 | 3.5 |
| Health care and social assistance | 62 | 3.4 | 1.7 |
Source: BLS SOII, Table 1, 2024. Industry estimates, not compliance limits or safety grades. Consult the original table for your specific industry and coverage and sampling notes.
Updated 2026-09-10: unified and dated the tables; removed universal performance grades.
Want a Deeper Dive into TRIR?
Read our complete guide covering the TRIR formula, worked examples, industry benchmarks by sector, common calculation mistakes, and proven strategies to improve your rate.
Read: How to Calculate TRIR →10 free toolbox talks
Your next safety talk is already written.
Skip the blank page. Pick a talk, gather your team, and walk into your next briefing prepared.
- 10 ready-written toolbox talks
- Questions to get your team talking
- Printable sign-in sheet included
Embed a Preview Card
This preview card links to the full calculator; it does not calculate inside your website.
<iframe src="https://dailysafetymoment.com/tools/embed/trir-calculator" width="100%" height="600" frameborder="0" title="TRIR & DART Rate Calculator"></iframe>