OSHA DART Rate Calculator
The OSHA DART (Days Away, Restricted, or Transferred) rate is a key metric used to measure a company's safety performance. It indicates the number of OSHA-recordable injuries and illnesses that result in days away from work, restricted work, or transfer to another job per 100 full-time workers during a calendar year. A lower DART rate generally signifies a safer workplace.
Total Hours Worked by All Employees:
Number of Recordable Incidents with Days Away, Restricted, or Transferred:
Calculate DART Rate
function calculateDART() {
var totalHoursWorked = parseFloat(document.getElementById("totalHoursWorked").value);
var recordableIncidents = parseFloat(document.getElementById("recordableIncidents").value);
var dartRateResultElement = document.getElementById("dartRateResult");
// Clear previous results
dartRateResultElement.textContent = "";
// Validate inputs
if (isNaN(totalHoursWorked) || isNaN(recordableIncidents) || totalHoursWorked <= 0) {
dartRateResultElement.textContent = "Please enter valid positive numbers for all fields.";
return;
}
// OSHA DART Rate Formula: (Number of Recordable Incidents * 200,000) / Total Hours Worked
// The 200,000 factor is based on 100 employees working 40 hours per week for 50 weeks per year (100 * 40 * 50 = 200,000).
var dartRate = (recordableIncidents * 200000) / totalHoursWorked;
dartRateResultElement.textContent = dartRate.toFixed(2);
}
.calculator-container {
font-family: sans-serif;
border: 1px solid #ccc;
padding: 20px;
border-radius: 8px;
max-width: 600px;
margin: 20px auto;
background-color: #f9f9f9;
}
.calculator-container h2, .calculator-container h3 {
text-align: center;
color: #333;
}
.input-section {
margin-bottom: 20px;
}
.input-section label {
display: block;
margin-bottom: 8px;
font-weight: bold;
color: #555;
}
.input-section input[type="number"] {
width: calc(100% – 22px);
padding: 10px;
margin-bottom: 15px;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
}
.calculator-container button {
display: block;
width: 100%;
padding: 12px 20px;
background-color: #007bff;
color: white;
border: none;
border-radius: 4px;
font-size: 16px;
cursor: pointer;
transition: background-color 0.3s ease;
}
.calculator-container button:hover {
background-color: #0056b3;
}
#result {
margin-top: 25px;
padding: 15px;
background-color: #e9ecef;
border-radius: 4px;
text-align: center;
}
#result h3 {
margin-top: 0;
color: #333;
}
#dartRateResult {
font-size: 24px;
font-weight: bold;
color: #28a745;
}