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TRIR Calculator.
Calculate total recordable incident rate from incidents and hours worked.
此计算器尚未完全翻译——部分文本以英文显示。
设备端计算无需注册
01
输入数值
输入时结果会更新。
02 / 答案
TRIR: 3
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Cite this calculator
Canonical URL: https://mathify.one/zh/finance/trir
Cite as: Mathify. (n.d.). 计算器: TRIR. https://mathify.one/zh/finance/trir
Use Cases
Annual Safety Performance Review
Calculate your company's TRIR at year-end to evaluate safety performance, set improvement goals, and report to stakeholders.
Example: A construction company with 5 incidents and 500,000 hours worked has a TRIR of 2.0.
Benchmarking Against Industry Standards
Use TRIR to compare your safety record with industry peers and identify if your incident rate is above or below average.
Example: Compare your TRIR of 4.5 to the industry average of 3.2 to spot areas needing attention.
Frequently Asked Questions
- What is TRIR and why is it important?
- TRIR (Total Recordable Incident Rate) is a safety metric that indicates the number of recordable incidents per a set number of hours worked (usually 200,000). It helps companies benchmark safety performance and identify areas for improvement.
- How is TRIR calculated?
- TRIR is calculated by multiplying the number of recordable incidents by the normalization base (typically 200,000) and then dividing by the total hours worked. The formula is: (Incidents × Base) ÷ Hours Worked.
- What is a good TRIR?
- A lower TRIR indicates better safety performance. Industry averages vary, but a TRIR below 3.0 is often considered good, while top-performing companies aim for below 1.0. Use this calculator to compare your rate against industry benchmarks.
Tips & Common Mistakes
Tips
- Ensure you include all recordable incidents as defined by OSHA or your local regulatory body—this includes fatalities, days away from work, restricted work, or medical treatment beyond first aid.
- Use the total hours actually worked by all employees, including overtime and temporary workers, to get an accurate rate.
- The standard normalization base is 200,000 hours (equivalent to 100 full-time employees working 40 hours per week for 50 weeks). Adjust if your industry uses a different base.
Common Mistakes to Avoid
- Using the number of employees instead of total hours worked—this leads to an incorrect TRIR.
- Forgetting to include all recordable incidents, such as those requiring only first aid, which should not be counted.
- Using a normalization base other than 200,000 without adjusting the calculation, which can misrepresent your rate.
Last updated: August 13, 2026