Please enter valid positive numbers. Average headcount cannot be zero.
Start Headcount:0
End Headcount:0
Average Headcount:0
Separations:0
Turnover Rate:0.00%
function calculateTurnover() {
// Get input elements using exact IDs
var startInput = document.getElementById('startHeadcount');
var endInput = document.getElementById('endHeadcount');
var sepInput = document.getElementById('separations');
var errorDiv = document.getElementById('errorMsg');
var resultDiv = document.getElementById('resultSection');
// Parse values
var startCount = parseFloat(startInput.value);
var endCount = parseFloat(endInput.value);
var separations = parseFloat(sepInput.value);
// Validation
if (isNaN(startCount) || isNaN(endCount) || isNaN(separations) || startCount < 0 || endCount < 0 || separations < 0) {
errorDiv.style.display = 'block';
resultDiv.style.display = 'none';
return;
}
// Calculate Average Headcount
var avgHeadcount = (startCount + endCount) / 2;
// Prevent division by zero
if (avgHeadcount === 0) {
errorDiv.innerText = "Average headcount cannot be zero.";
errorDiv.style.display = 'block';
resultDiv.style.display = 'none';
return;
}
// Calculate Turnover Rate
var turnoverRate = (separations / avgHeadcount) * 100;
// Update Results
document.getElementById('resStart').innerText = startCount;
document.getElementById('resEnd').innerText = endCount;
document.getElementById('resAvg').innerText = avgHeadcount.toFixed(1);
document.getElementById('resSep').innerText = separations;
document.getElementById('resRate').innerText = turnoverRate.toFixed(2) + '%';
// Show Results, Hide Error
errorDiv.style.display = 'none';
resultDiv.style.display = 'block';
}
Understanding Employee Turnover Rate
Employee turnover rate is a crucial HR metric that measures the percentage of employees who leave an organization during a specific time period. Whether voluntary (resignation) or involuntary (layoffs, termination), tracking this metric helps businesses understand workforce stability and the effectiveness of retention strategies.
The Turnover Rate Formula
To calculate the turnover rate, you need three key figures: the number of employees at the beginning of the period, the number of employees at the end, and the total number of separations during that period.
Average Headcount = ( Start Headcount + End Headcount ) / 2
Step-by-Step Calculation Example
Let's look at a concrete example to illustrate how the calculator above works. Suppose you want to calculate the monthly turnover rate for a marketing department.
Step 1: Determine Headcounts. On January 1st, the department had 50 employees. On January 31st, it had 52 employees.
Step 2: Count Separations. During January, 3 employees left the company.
Step 3: Calculate Average Headcount.
(50 + 52) / 2 = 51 average employees.
Step 4: Calculate Rate.
(3 / 51) × 100 = 5.88%
In this example, the turnover rate for the month of January is 5.88%.
What is a "Good" Turnover Rate?
There is no single number that applies to every business, as turnover rates vary drastically by industry. For example:
Retail and Hospitality: Often see higher rates, sometimes exceeding 50% or 60% annually.
Technology and Finance: Typically aim for lower rates, often between 10% and 15%.
Professional Services: Usually maintain moderate rates around 10-20%.
Generally, a healthy turnover rate is considered to be roughly 10%, but it is vital to benchmark against competitors in your specific sector.
Why This Metric Matters
High turnover can be expensive. Costs include recruitment fees, training for new hires, and lost productivity during the transition. By monitoring your turnover rate using the calculator above, you can identify trends early. If the rate spikes, it may indicate issues with company culture, compensation competitiveness, or management effectiveness.