TRIR Calculator
Enter your recordable incidents and total hours worked to calculate your TRIR.
- Free
- No sign-up
Enter incidents and hours worked to see the TRIR.
Worked example
With these example inputs:
- Recordable incidents5
- Hours worked250,000
TRIR: 4
- Full-time equivalents125
- With one incident fewer3.20
- Per million hours20
Frequently asked questions
How is TRIR calculated?
Multiply recordable incidents by 200,000 and divide by total hours worked. Five incidents over 250,000 hours gives a TRIR of 4.0.
What does the 200,000 represent?
It is the hours 100 employees work in a year, at 40 hours a week for 50 weeks. Using it lets companies of different sizes compare safety on the same scale.