Employee Turnover Rate Calculator

Find the percentage of staff who leave over a period.

Separations

Employees who left during the period.

Average employees

Average headcount over the period.

Results update as you type.

Turnover rate

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How it works

An employee turnover rate calculator measures how much of a workforce leaves over a given period, expressed as a percentage of the average headcount. You enter the number of separations — employees who departed, whether they resigned, retired or were let go — and the average number of employees during the period, and the tool returns the turnover rate. Turnover is one of the most closely watched metrics in human resources because it carries a heavy and often hidden cost. Every departure triggers expense and disruption: recruiting and interviewing a replacement, onboarding and training them, lost productivity while the role sits vacant or the newcomer gets up to speed, and the drain on morale and institutional knowledge when experienced people walk out the door. A high turnover rate can signal deeper problems — poor management, uncompetitive pay, weak culture or limited growth — while a very low rate, though usually healthy, can occasionally indicate stagnation. The divide method used here compares departures against the typical headcount rather than a single snapshot, which matters because a company that grew or shrank during the period would otherwise distort the figure. Using the average smooths that out. HR teams and leaders use turnover rate to benchmark against their industry, to spot troubled departments before the problem spreads, to quantify the cost of attrition in a business case for retention spending, and to judge whether initiatives like better onboarding, career paths or pay reviews are actually keeping people. Tracking it over time turns anecdotes about people leaving into a measurable trend that can be managed.

Formula

Turnover rate = separations ÷ average employees × 100

Separations are the total number of employees who left during the period, and average employees is the typical headcount over that same span, usually the starting count plus the ending count divided by two. Dividing separations by the average headcount gives the fraction of the workforce that departed, and multiplying by one hundred expresses it as a percentage. Using the average rather than a single point in time prevents growth or shrinkage during the period from distorting the rate.

Source:Standard human-resources (turnover) metric

We review all our tools from time to time to ensure accuracy.

Worked example

Separations:15Average employees:120

Turnover rate = 15 ÷ 120 × 100 = 12.5% of staff left over the period.

How to use this calculator

1
Enter your values
Enter separations and average employees.
2
Adjust the options
Fine-tune any options to match your situation.
3
Read your result
Turnover rate updates instantly as you type — no button to press.

Frequently asked questions

What is a good employee turnover rate?

It depends heavily on the industry. Sectors like hospitality and retail routinely see turnover above 30 or 40 percent because of seasonal and part-time roles, while professional and technical fields often run in the single digits or low teens. Rather than chase a universal number, benchmark against your own industry and your own history. A rate that is stable or falling generally signals healthy retention, while a rising rate warns of problems worth investigating before they spread.

Should I count all departures or only resignations?

It depends on what you want to learn. Total turnover counts every separation — resignations, retirements, dismissals and redundancies — and measures overall workforce churn. Voluntary turnover counts only employees who chose to leave, which is a sharper signal of engagement and satisfaction because it reflects decisions the company might have influenced. Many organisations track both: total turnover for planning and cost, voluntary turnover to gauge whether good people are leaving for avoidable reasons.

How do I calculate average number of employees?

The simplest method adds the headcount at the start of the period to the headcount at the end and divides by two. This smooths out a business that grew or shrank during the period, which a single snapshot would misrepresent. For more precision, especially with strong seasonal swings, average the headcount across each month of the period. The goal is a figure that reflects the typical size of the workforce over the whole span rather than one arbitrary date.

Why does high turnover cost so much?

Replacing an employee carries direct and indirect costs that add up quickly. Direct costs include advertising the role, recruiter fees and time spent interviewing. Indirect costs are larger but harder to see: lost productivity while the seat is empty, the ramp-up time before a new hire is fully effective, the burden on remaining staff, and the loss of institutional knowledge and relationships. Estimates commonly put the cost of replacing an employee at a substantial fraction of their annual salary.

How can a business reduce turnover?

Start by understanding why people leave, through exit interviews and engagement surveys, then address the specific causes rather than guessing. Common levers include competitive pay and benefits, clear career progression, strong and supportive management, better onboarding, and a culture people want to stay in. Because turnover is expensive, investing in retention often pays for itself. Tracking the rate over time shows whether these efforts are working and which departments still need attention.