Engineering calculators

TRIR Calculator

Updated Sep 27, 2026 By Infinity Calculator
Rate Formulas Sources
Calculation Period
Annual mode uses the OSHA standard 200,000-hour multiplier (100 full-time equivalent workers per year).
Enter Your Safety Data (over the past 12 months)
Work-related injuries/illnesses needing treatment beyond first aid, days away, restricted work, or diagnosis by a healthcare professional.
A subset of recordable cases where the employee missed one or more days of work.
A subset of recordable cases with job transfer or restricted duty only (no days away).
Actual hours worked — exclude vacation, sick, and leave. Tip: employees × avg annual hours (e.g., 10 × 2,000 = 20,000).
Try an Example:
Live Formula Preview TRIR = ( Total Recordable Cases × 200,000 ) ÷ Total Hours Worked TRIR = ( 5 × 200,000 ) ÷ 200,000

Your Results

5.00
Total Recordable Incident Rate (Annual)
Total Recordable Cases5
Days Away from Work Cases3
Restricted Work Cases1
Total Hours Worked200,000
Multiplier Used200,000 (Annual)
Your TRIR5.00
Calculation PeriodAnnual
Benchmark Comparison
Below Industry Average
Recordable Case Breakdown
Days Away Restricted Work Other Recordable
Step-by-Step Solution
Your TRIR vs. Industry Benchmark
Industry Benchmark Comparison
Industry NAICS TRIR (2024)
Source: U.S. Bureau of Labor Statistics, Survey of Occupational Injuries and Illnesses (SOII), 2024 — Published January 2026. Prior-year and non-private-sector figures are trend-adjusted estimates for comparison.

Introduction

The TRIR calculator finds your workplace's Total Recordable Incident Rate. TRIR is a number that shows how safe your workplace is. It counts work injuries and illnesses, then compares them to the total hours your team worked. A lower TRIR means fewer people got hurt on the job. OSHA's injury recordkeeping forms show how to work it out.1

To use this calculator, you need three things: your total recordable cases, the number of days-away or restricted-work cases, and the total hours worked by all employees. Enter your numbers, click calculate, and the tool computes your rate. It uses the standard OSHA formula: recordable cases times 200,000 divided by total hours worked.1 You can also switch to a monthly mode if you only want to check one month at a time.

Once you get your result, the calculator compares your TRIR to industry benchmarks from the Bureau of Labor Statistics. You can filter by year, sector, and industry type to see how your rate stacks up. This makes it easy to spot whether your safety program is working well or needs attention.

How to Use Our TRIR Calculator

Enter your workplace safety numbers below to find your Total Recordable Incident Rate. The calculator will show your TRIR score, compare it to industry benchmarks, and give you a step-by-step breakdown of the math.

Calculation Period: Pick Annual if your data covers a full year, or Monthly if it covers just one month. This sets the right multiplier for your rate.

Total Recordable Cases: Enter the number of work-related injuries or illnesses that needed more than basic first aid. This includes cases with days away, restricted work, job transfers, or a diagnosis from a doctor.3

Cases Involving Days Away from Work: Enter the number of recordable cases where the worker missed at least one day of work. This must be equal to or less than your total recordable cases.

Cases Involving Job Transfer or Restricted Work Activity Only: Enter the number of recordable cases where the worker was moved to a different job or put on light duty but did not miss a full day of work.

Total Hours Worked by All Employees: Enter the total hours all your employees actually worked during the period. Do not count vacation, sick days, or other time off.1 For example, 50 employees working 2,000 hours each equals 100,000 total hours.

Press Calculate TRIR to see your results. Use the Industry Benchmark Comparison panel to compare your rate against specific industries, employer types, and years.

What Is the Total Recordable Incident Rate (TRIR)?

The Total Recordable Incident Rate, or TRIR, is a number that shows how safe a workplace is. It counts how many work-related injuries and illnesses happened over a set number of hours worked. OSHA (the Occupational Safety and Health Administration) requires employers to track these incidents.3 TRIR is one of the most common ways to measure workplace safety performance in the United States. It often sits alongside other operational metrics like Overall Equipment Effectiveness (OEE) as a key indicator of how well a facility is managed.

How Is TRIR Calculated?

The TRIR formula is simple. You multiply your total recordable cases by 200,000, then divide by the total hours all employees worked.1 The number 200,000 stands for 100 full-time workers, each working 40 hours a week for 50 weeks a year.1 This standard multiplier lets you compare companies of different sizes on equal footing.1

TRIR = (Total Recordable Cases × 200,000) ÷ Total Hours Worked1

What Counts as a Recordable Case?

A recordable case is any work-related injury or illness that goes beyond basic first aid.3 This includes cases where a worker needed medical treatment, missed days of work, was moved to a different job, or had restricted duties.3 Loss of consciousness, and a significant injury or illness diagnosed by a doctor or other licensed health care professional, also count.3 Minor injuries treated with a bandage or ice pack are not recordable.3

What Is a Good TRIR?

A lower TRIR means a safer workplace. In 2024, the average TRIR for all private industry in the U.S. was 2.3, according to the Bureau of Labor Statistics.2 If your TRIR is below your industry average, your safety record is better than most. If it is above the average, there is room to improve. Different industries have very different averages. For example, in 2024 crude petroleum extraction averaged 0.5, while transportation and warehousing averaged 4.4 and hospitals 5.1.2

Why Does TRIR Matter?

Companies use TRIR to spot safety problems, set goals, and track progress over time. Many contractors must report their TRIR before they can bid on projects. Insurance companies also look at TRIR when setting premiums. A high TRIR can cost a business money and reputation. A low TRIR shows that a company takes worker safety seriously and has strong safety programs in place.

Annual vs. Monthly TRIR

Most companies calculate TRIR on a yearly basis using the 200,000-hour multiplier. However, you can also calculate a monthly rate by using 16,667 as the multiplier (200,000 divided by 12). Monthly tracking helps you catch trends early and respond to safety issues faster. This calculator supports both options.

Formulas used

Total Recordable Incident Rate (Annual) 1
\text{TRIR} = \frac{\text{Total Recordable Cases} \times 200{,}000}{\text{Total Hours Worked}}
Total Recordable Incident Rate (Monthly)
\text{TRIR}_{\text{monthly}} = \frac{\text{Total Recordable Cases} \times 16{,}667}{\text{Total Hours Worked}}
Monthly Multiplier
\text{Monthly Multiplier} = \frac{200{,}000}{12} \approx 16{,}667
Other Recordable Cases
\text{Other Recordable} = \text{Total Recordable Cases} - \text{Days Away Cases} - \text{Restricted Work Cases}
Industry Benchmark (Year & Sector Adjusted)
\text{Benchmark} = \text{TRIR}_{\text{industry}} \times \frac{\text{Rate}_{\text{selected year}}}{\text{Rate}_{2024}} \times \text{Sector Factor}

Frequently asked questions

What does TRIR stand for?

TRIR stands for Total Recordable Incident Rate. It is a number that measures how many work injuries and illnesses happen at a workplace compared to the total hours worked.

What is the 200,000 number in the TRIR formula?

The number 200,000 represents 100 full-time workers, each working 40 hours a week for 50 weeks a year.1 OSHA uses this standard multiplier so you can compare safety rates between companies of different sizes.1

When should I use monthly mode instead of annual mode?

Use monthly mode when your data covers only one month. Monthly mode uses a multiplier of 16,667 instead of 200,000. This helps you spot safety trends early without waiting a full year.

Should I include overtime hours in total hours worked?

Yes. Include all hours your employees actually worked, including overtime.1 Do not include vacation time, sick days, holidays, or any other paid time when employees were not working.1

Does a TRIR of zero mean my workplace is perfectly safe?

A TRIR of zero means no recordable incidents happened during the time period you measured. It does not guarantee that no one will get hurt in the future. Keep following your safety programs even with a zero TRIR.

Why is my sub-case total higher than my total recordable cases?

Your days-away cases and restricted-work cases are both subsets of total recordable cases. If they add up to more than your total, one or more of your numbers may be wrong. Check your entries and correct them.

What is the difference between TRIR and DART rate?

TRIR counts all recordable injuries and illnesses. The DART rate only counts cases that involve days away, restricted work, or job transfer. DART is always equal to or lower than TRIR.1

Do I include first-aid-only cases in my total recordable cases?

No. First-aid cases are not recordable.3 Only include injuries or illnesses that caused death, days away from work, restricted work or a job transfer, medical treatment beyond first aid, or loss of consciousness, or that a doctor or other licensed health care professional diagnosed as significant.3

How do I count total hours worked for part-time employees?

Count the actual hours each part-time employee worked.1 Add those hours to the hours worked by all other employees. Every real hour worked counts, whether the person is full-time or part-time.

Why does my TRIR seem very high with only a few employees?

When total hours worked is small, even one injury makes the TRIR jump a lot. TRIR works best for larger groups. With very few employees, a single incident can push your rate well above industry averages.

What TRIR do contractors need to win bids?

Many clients require a TRIR below the industry average to qualify for bids. Some set a hard cutoff, like 1.0 or lower. Check the specific requirements of the company or project you are bidding on.

Can I compare my TRIR across different years?

Yes. Use the Reference Year dropdown in the benchmark panel to pick any year from 2003 to 2024. For past years, the tool scales each industry's 2024 rate by how much the all-private-industry rate has changed since that year, so those industry figures are estimates.

What is the difference between state government and private industry benchmarks?

State government workplaces tend to have higher TRIRs than private industry on average.2 Use the Sector / Ownership dropdown to switch between private, state, local, or all ownership types. The tool scales the chosen industry's private-industry rate by the 2024 ratio for that ownership type.

Sources

  1. OSHA Forms for Recording Work-Related Injuries and Illnesses (Forms 300, 300A and 301). Occupational Safety and Health Administration. How to calculate incidence rates; Form 300A hours worksheet. Accessed September 27, 2026.
  2. Table 1. Incidence rates of nonfatal occupational injuries and illnesses by industry and case types, 2024. U.S. Bureau of Labor Statistics. 2024;Survey of Occupational Injuries and Illnesses; footnote 1. Accessed September 27, 2026.
  3. 29 CFR Part 1904 — Recording and Reporting Occupational Injuries and Illnesses. Electronic Code of Federal Regulations. National Archives and Records Administration. § 1904.7. Accessed September 27, 2026.

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