STEP 01
Enter workforce figures
Add the number of employees at the start and end of the period, total exits, new hires, and voluntary exits if known.
Free HR Calculator
Understand employee attrition clearly.
Calculate your employee attrition rate using the number of employees who left and your average workforce size. Review turnover trends, compare periods, and make more informed workforce planning decisions.
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No sign-up required
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Workforce overview
Illustrative
12.5%
Example employee attrition rate
Employees who left
25
Average headcount
200
Period
1 year
Calculation
25 ÷ 200
Example values only. Enter your own workforce figures in the calculator below to get your result.
Attrition Calculator
Calculate your workforce turnover.
Enter your headcount at the beginning and end of a period, along with employee exits. The calculator estimates average headcount and computes your attrition rate.
Workforce details
Enter the figures for the period you want to measure.
Detailed Summary
Your workforce, at a glance.
Use this breakdown to review the inputs and understand how the reported attrition rate was calculated.
| Metric | Value | Explanation |
|---|---|---|
| Reporting period | Annual | Selected reporting period |
| Starting headcount | 200 | Employees at the start |
| Ending headcount | 190 | Employees at the end |
| Average headcount | 195 | (Starting headcount + ending headcount) ÷ 2 |
| Total employee exits | 25 | Total exits during the period |
| Voluntary exits | 15 | Included within total exits |
| New hires | 15 | Employees hired during the period |
| Employee attrition rate | 12.82% | Total exits ÷ average headcount × 100 |
| Voluntary attrition rate | 7.69% | Voluntary exits ÷ average headcount × 100 |
| Net workforce change | −10 | Ending headcount − starting headcount |
Important: This calculator uses average headcount
= (starting headcount + ending headcount) ÷ 2. Some organizations
use average monthly headcount or a different reporting convention.
For formal HR reporting, use your organization's approved method
consistently. Voluntary exits are a subset of total exits and
must not be added to total exits a second time.
How It Works
A simple formula. A clearer picture.
Attrition becomes easier to understand when employee exits are considered alongside the average size of your workforce.
STEP 02
Calculate average headcount
The calculator adds starting and ending headcount, then divides the total by two to estimate average headcount.
STEP 03
Review your attrition rate
Total exits are divided by average headcount and multiplied by 100 to produce the percentage for the selected period.
HR Fundamentals
Understand what your numbers mean.
Attrition is one workforce indicator. Interpreting it alongside hiring, retention, employee feedback, and organizational changes provides a more complete picture.
What is employee attrition rate?
Employee attrition rate measures the proportion of the average workforce that leaves an organization during a defined period. The exact definition may vary by company and reporting policy.
Attrition rate vs. employee turnover
These terms are often used interchangeably, but some HR teams distinguish attrition from turnover based on whether departing employees are replaced. Confirm the definition used in your organization's reports before comparing results.
Voluntary and involuntary exits
Voluntary exits are employee-initiated departures, such as resignations. Involuntary exits are employer-initiated departures, such as dismissals or redundancies. Their treatment in HR reports depends on your reporting policy.
Why compare periods consistently?
Comparing like-for-like periods can help identify changes in workforce movement. Consider seasonality, organizational restructuring, workforce growth, and changes in headcount definitions before interpreting differences.
Does a lower rate always mean better retention?
Not necessarily. Attrition should be interpreted in context. The reasons for departures, critical-role vacancies, hiring patterns, employee experience, and business changes all matter. A single percentage cannot explain why employees leave.
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Make workforce data easier to understand.
Use the calculator to estimate attrition, review your reporting figures, and create a printable summary for your own records.
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