# DART Rate Calculator

URL: https://speedycalculator.com/calculators/finance/dart-rate/
Last updated: 2026-10-25

> The DART rate calculator works out the OSHA Days Away, Restricted or Transferred rate – the number of recordable cases that caused days away from work, job restriction or transfer per 100 full-time workers per year.

## Inputs

- Number of DART cases
- Total hours worked
- Number of employees (optional)

## Results

- DART rate
- Cases per 100 employees (by headcount)

## Formula

```
DART rate = (number of DART cases × 200,000) ÷ total hours worked
200,000 = 100 full-time employees × 40 hours × 50 weeks
```

## Explanation

OSHA uses the DART rate (with the TRIR) to compare safety performance. BLS publishes industry averages – for private industry the DART rate is about 1.5.

### How to use the DART Rate Calculator

- **Number of DART cases**
- **Total hours worked**
- **Number of employees (optional)**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Enter the number of DART cases and the total hours worked by all employees in the year.

### Tips

- Enter figures for the same period and in the same currency.
- Exchange rates and prices change constantly – update them before you rely on a result.
- Use results as estimates and confirm important figures with the official source.
- Everything runs in your browser – try different values to compare scenarios.

### Common mistakes to avoid

- Mixing gross and net figures.
- Using outdated rates.
- Treating rules of thumb as exact.

### Inputs explained

FieldWhat to enterNumber of DART casesA numberTotal hours workedA numberNumber of employees (optional)A number

### Example values

How the main result changes when **Number of DART cases** changes and everything else stays at the example values above:

Number of DART casesDART rate2131.54252.56384

## Worked example

Inputs — Number of DART cases: 4; Total hours worked: 400,000; Number of employees (optional): 200.

Results — **DART rate = 2**; Cases per 100 employees (by headcount) = 2.

## FAQ

**What is the DART rate?**
Cases with days away, restricted duty or transfer per 100 full-time workers.

**Why 200,000 hours?**
It's the hours of 100 employees working 40 hours a week for 50 weeks.

**What is a good DART rate?**
Lower than your industry average published by BLS.

**What formula does the DART Rate Calculator use?**
DART rate = (number of DART cases × 200,000) ÷ total hours worked.


## Sources

- [OSHA – Recordkeeping](https://www.osha.gov/recordkeeping)