Compute the Total Recordable Incident Rate used in workplace safety reporting.
Please do not make financial decisions based on these results.
What is the TRIR Calculator?
Compute the Total Recordable Incident Rate used in workplace safety reporting. To use the TRIR Calculator, enter recordable incidents, total hours worked; it returns trir, hours per incident, and shows them instantly as you type.
Where the TRIR Calculator fits
Compute the Total Recordable Incident Rate used in workplace safety reporting. The main figure it returns is the TRIR, worked out from the values you enter.
It belongs with the other hr & workforce tools. If you are comparing options or checking a result from another angle, try the DART Rate Calculator, Bill Rate Calculator or the Absence Percentage Calculator.
How to use the TRIR Calculator
- Fill in the fields. You will need Recordable incidents, Total hours worked. Use real figures from your own records where you can. Fields marked optional can stay at zero.
- Read the result. The highlighted box gives the TRIR, and the cards below show Hours per incident. Tables and charts break it down further.
- Test other scenarios. Results update as you type. Change one value at a time to see what drives the answer, and press Reset to go back to the defaults.
Formula and how it works
Example with real numbers
Here is the TRIR Calculator using the default values shown in the calculator above:
Inputs
| Recordable incidents | 4 |
|---|---|
| Total hours worked | 520,000 |
Results
| TRIR | 1.54 |
|---|---|
| Hours per incident | 130,000 |
With these inputs the calculator returns TRIR: 1.54. Change any value in the calculator to see how the result moves.
What if you change one input?
Sensitivity check: raising Recordable incidents from 4 to 4.8 (about 20% higher) and leaving everything else as in the example above changes the results like this:
| Result | Example | After the change | Change |
|---|---|---|---|
| TRIR | 1.54 | 1.85 | +20% |
| Hours per incident | 130,000 | 108,333 | -16.7% |
The input that moves the result most is the one to check twice. Change it in the calculator above to test your own case.
What the results tell you
The results panel of the TRIR Calculator reports TRIR and hours per incident. Compare these figures while changing one input at a time, and use the related calculators below to look at the same situation from another angle.
Method and limits. This calculator applies the formula in the section above to your inputs, in your browser; nothing you enter is stored on our servers. The result is only as accurate as the numbers you enter and the formula shown above. It is for information, not financial, tax or legal advice.
Frequently asked questions
What is a good TRIR?
Lower is better; rates under the industry average for your NAICS code are the goal.
How do I calculate turnover rate?
Divide the number of leavers by the average headcount for the period and multiply by 100.
Are the safety rates the OSHA method?
Yes. TRIR and DART use the OSHA formula with the 200,000-hour base.
Are the results guaranteed?
No. Results depend entirely on the numbers you enter and the formulas shown on this page. Please do not make financial decisions based on them alone; confirm important figures with a licensed professional.
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