HR KPIs: 10 Human Resources Metrics With Formulas and Examples

Is your HR team measuring what actually matters, or mostly reacting to hiring problems, resignations, overtime, and employee issues as they appear?

HR KPIs help turn workforce data into information you can use to understand recruiting, turnover, labor costs, employee experience, workplace safety, and other areas that affect business performance.

In this guide, you will learn 10 practical human resources metrics, including their formulas, numerical examples, interpretation, and the decisions each metric can support.

Do not try to track every HR metric at once. Start with the 5 to 7 KPIs most closely connected to the problem or objective you are managing, then compare trends over time instead of judging performance from a single month’s result.

On This Page

• 10 HR KPIs at a Glance
• Which HR KPIs Should You Track?
• Recruiting KPIs
• Turnover and Retention KPIs
• Employee Experience, Safety, and Pay Metrics
• How to Interpret HR KPIs
• Additional HR Metrics to Consider
• How to Implement HR KPIs
• Common HR KPI Mistakes
• Frequently Asked Questions

10 HR KPIs at a Glance

The best KPI depends on the question you are trying to answer. This table provides a quick overview before we examine each metric in detail.

HR KPI	What It Measures	Basic Formula	Typical Use
Time to Fill	Speed of the hiring process	Offer acceptance date − requisition open date	Recruiting efficiency
Cost per Hire	Average recruiting cost per new hire	Recruiting costs ÷ number of hires	Recruiting cost control
Market Pay Ratio	Pay compared with a relevant market rate	Company pay ÷ market pay × 100	Compensation analysis
Internal Fill Rate	Positions filled by existing employees	Internal positions filled ÷ total positions filled × 100	Internal mobility
Voluntary Turnover Rate	Employees who choose to leave	Voluntary separations ÷ average headcount × 100	Retention analysis
Involuntary Turnover Rate	Separations initiated by the employer	Involuntary separations ÷ average headcount × 100	Hiring and performance analysis
Total Turnover Rate	Overall employee separations	Total separations ÷ average headcount × 100	Workforce stability
Employee Climate Score	Employee perceptions measured through a consistent survey	Average survey score	Workplace trend analysis
Total Case Incidence Rate (TCIR)	OSHA-recordable workplace injuries and illnesses relative to hours worked	Recordable cases × 200,000 ÷ hours worked	Workplace safety
Pay Gap by Employee Segment	Descriptive pay difference between comparable groups	(Reference average − comparison average) ÷ reference average × 100	Compensation review

These formulas give you a consistent starting point, but a KPI should not be interpreted without context. Industry, company size, job type, location, measurement period, and your own historical results can materially change what a number means.

Which HR KPIs Should You Track?

Start with the business problem rather than the dashboard.

If You Want To…	Start With…
Improve recruiting	Time to Fill, Cost per Hire, Market Pay Ratio
Understand employee turnover	Voluntary Turnover, Involuntary Turnover, Total Turnover
Improve internal development	Internal Fill Rate, training metrics, retention
Review employee experience	Employee Climate Score, turnover, absenteeism
Monitor workplace safety	TCIR and other applicable safety measures
Review compensation	Market Pay Ratio and pay gap analysis using comparable employee groups

You do not need every metric in this article. A useful dashboard is one that helps you answer specific management questions and decide what to investigate or change.

Recruiting KPIs

Recruiting metrics help you understand how quickly your organization fills positions, what hiring costs, and whether compensation may be affecting your ability to attract candidates.

1. Time to Fill

What it measures:
The number of calendar days required to fill an open position.

For a consistent definition, you can measure the period from the date the job requisition is opened until the candidate accepts the employment offer. This is also the definition used in SHRM’s recruiting benchmarking methodology.

Formula:
Time to Fill = Offer Acceptance Date − Job Requisition Open Date

Example:
Requisition opened: March 1
Offer accepted: March 21
Time to Fill = 20 calendar days

How to interpret it:

If time to fill is increasing, investigate where candidates spend the most time in the hiring process. Possible causes may include a difficult-to-fill role, compensation, slow approvals, scheduling delays, unclear job requirements, or a limited candidate pool.

A very short time to fill is not automatically a positive result either. Speed should not come at the expense of appropriate screening and hiring quality.

Instead of asking whether your number is universally “good” or “bad,” compare similar positions, departments, and periods using the same definition.

For additional context, see the SHRM Recruiting Benchmarking Report.

2. Cost per Hire

What it measures:
The average recruiting cost associated with each new hire during a defined period.

Formula:
Cost per Hire = Total Recruiting Costs ÷ Number of Hires

Recruiting costs may include relevant internal and external expenses such as job advertising, recruiting technology, agency fees, referral programs, assessments, recruiter compensation, travel, and other hiring-related costs included in your chosen methodology.

Example:
Job advertising and external costs: $1,800
Internal recruiting costs: $3,200
Total recruiting costs: $5,000
Hires: 4
Cost per Hire = $5,000 ÷ 4 = $1,250

How to interpret it:

An increase in cost per hire can justify reviewing which recruiting channels, agencies, assessments, or internal process steps are consuming more resources.

A lower cost is not automatically better. Reducing recruiting spending can become counterproductive if it increases early turnover, hiring errors, or the time positions remain vacant.

Keep the categories included in the calculation consistent from one period to another. Otherwise, the trend may reflect a change in accounting methodology rather than a real change in recruiting cost.

3. Market Pay Ratio

What it measures:
How a salary or pay level compares with a relevant external market reference.

Formula:
Market Pay Ratio (%) = Company Pay ÷ Relevant Market Pay × 100

Example:
Annual salary offered: $54,000
Relevant market rate: $60,000
Market Pay Ratio = $54,000 ÷ $60,000 × 100 = 90%

A result of 90% means the salary used in the calculation is 90% of the selected market reference.

How to interpret it:

The usefulness of this metric depends on the quality of the market comparison. Use compensation data that is as comparable as possible by role, responsibilities, experience level, industry, and geographic labor market.

Do not treat 100% as a universal target. A company’s compensation strategy may intentionally position some roles below, at, or above a market reference depending on total rewards, talent availability, internal equity, and business strategy.

Turnover and Retention KPIs

Turnover metrics help you understand employee movement, but they do not explain the cause by themselves.

A change in turnover may justify investigating compensation, management, workload, career opportunities, hiring quality, job design, employee experience, or other factors depending on the affected population.

4. Internal Fill Rate

What it measures:
The percentage of positions filled by people who were already employed by the organization.

Formula:
Internal Fill Rate (%) = Positions Filled Internally ÷ Total Positions Filled × 100

Example:
Total positions filled: 12
Positions filled by internal candidates: 3
Internal Fill Rate = 3 ÷ 12 × 100 = 25%

How to interpret it:

This metric can help you evaluate internal mobility and whether existing employees are moving into available positions.

A low internal fill rate does not automatically indicate a problem. Some positions legitimately require skills or experience that are not available internally.

If your organization wants to increase internal mobility, combine this KPI with information about training, succession planning, employee skills, career paths, and the types of positions being opened.

5. Voluntary Turnover Rate

What it measures:
Employee separations initiated voluntarily by employees relative to average headcount during the period.

Formula:
Voluntary Turnover Rate (%) = Voluntary Separations ÷ Average Headcount × 100

For a simple monthly calculation:

Average Headcount = (Beginning Headcount + Ending Headcount) ÷ 2

Example:
Beginning headcount: 50
Ending headcount: 54
Average headcount = (50 + 54) ÷ 2 = 52
Voluntary separations: 4
Voluntary Turnover Rate = 4 ÷ 52 × 100 = 7.69%

How to interpret it:

Do not assume that one turnover percentage identifies the cause.

If voluntary turnover increases, segment the result by location, department, manager, job family, tenure, and other relevant factors. Then compare those patterns with information such as compensation, employee survey results, workload, promotion opportunities, and exit feedback.

The most useful comparison is usually against your own historical trend and comparable employee populations rather than an isolated universal benchmark.

6. Involuntary Turnover Rate

What it measures:
Employee separations initiated by the employer relative to average headcount during the period.

Formula:
Involuntary Turnover Rate (%) = Involuntary Separations ÷ Average Headcount × 100

Example:
Average headcount: 52
Involuntary separations: 2
Involuntary Turnover Rate = 2 ÷ 52 × 100 = 3.85%

How to interpret it:

An increase may justify reviewing the types of separations involved rather than assuming one explanation.

Depending on the situation, relevant questions may involve recruiting quality, onboarding, performance expectations, workforce restructuring, attendance, conduct, or changes in business conditions.

Segmenting the metric is important because organization-wide averages can hide a problem concentrated in one role, department, or location.

7. Total Turnover Rate

What it measures:
Total employee separations during the period relative to average headcount.

Formula:
Total Turnover Rate (%) = Total Separations ÷ Average Headcount × 100

Example:
Voluntary separations: 4
Involuntary separations: 2
Total separations: 6
Average headcount: 52
Total Turnover Rate = 6 ÷ 52 × 100 = 11.54%

How to interpret it:

Total turnover provides a broad view of workforce movement, but voluntary and involuntary turnover should still be reviewed separately because the underlying management questions are different.

Frequent turnover can also create costs beyond recruiting, including onboarding time, lost productivity, training requirements, additional workload for remaining employees, and the loss of role-specific knowledge.

Employee Experience, Safety, and Pay Metrics

Some workforce risks are less visible in day-to-day operations. Survey trends, safety data, and compensation analysis can provide additional signals that deserve investigation.

8. Employee Climate Score

What it measures:
An internal summary of employee responses to a workplace climate or employee experience survey.

Simple formula:
Employee Climate Score = Sum of Comparable Survey Scores ÷ Number of Scores

Example:
A company uses 10 questions rated from 1 to 5.
Sum of the average scores for the 10 questions: 32
Employee Climate Score = 32 ÷ 10 = 3.2 out of 5

How to interpret it:

There is no universal Employee Climate Score that applies to every survey.

The questions, scale, methodology, response rate, and employee population affect the result. If you want to track trends, keep the survey instrument and scoring method consistent whenever possible.

Also examine individual dimensions instead of relying only on the overall average. A company can have an acceptable overall score while showing a clear problem in leadership, workload, communication, recognition, or another area.

9. Total Case Incidence Rate (TCIR)

What it measures:
The rate of OSHA-recordable workplace injuries and illnesses relative to the total hours worked.

Unlike a simple percentage of accidents divided by employees, OSHA uses a standardized base that allows incidence rates to be compared across organizations of different sizes.

Formula:
TCIR = (Number of OSHA-Recordable Cases × 200,000) ÷ Total Employee Hours Worked

The value 200,000 represents the hours 100 full-time employees would work at 40 hours per week for 50 weeks.

Example:
OSHA-recordable cases: 3
Total hours worked: 120,000
TCIR = (3 × 200,000) ÷ 120,000 = 5.0

How to interpret it:

Compare the rate over time and, when appropriate, with relevant industry and establishment-size data rather than using one universal threshold.

OSHA also notes that a single case can have a much larger effect on the incidence rate of a small establishment than on the rate of a large employer. That makes context especially important for small businesses.

Not every workplace event is an OSHA-recordable case. Determine the numerator using the applicable OSHA recordkeeping criteria rather than counting every incident automatically.

See the OSHA explanation of incidence-rate calculations for the official formula and additional context.

10. Pay Gap by Employee Segment

What it measures:
A descriptive difference between the average pay of two employee groups selected for analysis.

Formula:
Pay Gap (%) = (Reference Group Average Pay − Comparison Group Average Pay) ÷ Reference Group Average Pay × 100

Example:
Reference group average pay: $70,000
Comparison group average pay: $65,000
Pay Gap = ($70,000 − $65,000) ÷ $70,000 × 100 = 7.14%

Important: a pay gap is a screening metric. It can identify a difference that deserves further analysis, but the percentage alone does not establish unlawful pay discrimination or explain why the difference exists.

For a meaningful comparison, examine employees performing genuinely comparable work and consider relevant job-related factors. The U.S. Equal Employment Opportunity Commission explains that pay analysis can require considering factors such as job content, skill, effort, responsibility, working conditions, experience, and other circumstances relevant to the comparison.

See the EEOC guidance on equal pay and compensation discrimination for the applicable U.S. legal context.

How to Interpret HR KPIs Without Jumping to the Wrong Conclusion

A KPI tells you what is happening within the definition you selected. It does not necessarily tell you why it is happening.

For example, rising voluntary turnover may justify investigating compensation, leadership, workload, hiring quality, career opportunities, scheduling, employee experience, or other factors. The turnover rate alone cannot tell you which explanation is correct.

A practical interpretation process uses several reference points.

• Historical trend: Is the KPI improving or deteriorating compared with previous periods?
• Internal comparison: Are some departments, locations, roles, or managers showing very different results?
• Business objective: Is the result moving toward or away from the outcome you are trying to improve?
• External benchmark: Is there a genuinely comparable industry or labor-market reference available?
• Related metrics: What other data could help explain the pattern?

This is why thresholds should be treated carefully. A number that is normal for one industry, role, geography, or business model may be problematic for another.

Use external benchmarks as reference points, not automatic verdicts. Your own consistent historical data is often one of the most useful starting points.

Additional HR Metrics to Consider

Once your core dashboard is useful and consistent, you can add other measures when they answer a specific management question.

Absenteeism

• Absenteeism Rate: Absence hours ÷ scheduled work hours × 100
• Days Lost to Absence: Total days of absence during the period

Retention

• Retention Rate: Employees from the starting population who remain at period end ÷ employees at the beginning of the period × 100
• First-Year Turnover: Separations among employees with less than one year of service, using a clearly defined denominator appropriate to your analysis
• Average Employee Tenure: Total employee tenure ÷ number of employees measured

Labor Cost

• Labor Cost per Employee: Total labor cost ÷ average headcount
• Labor Cost as a Percentage of Revenue: Total labor cost ÷ revenue × 100
• Benefits as a Percentage of Payroll: Benefit cost ÷ payroll cost × 100

Training and Development

• Training Hours per Employee: Total training hours ÷ average headcount
• Training Participation Rate: Employees who completed training ÷ target employee population × 100
• Training Cost per Employee: Total training cost ÷ number of employees included in the calculation

Performance

• Goal Completion Rate: Completed goals ÷ total applicable goals × 100
• Employees Below Performance Expectations: Employees classified below the defined performance threshold ÷ evaluated employees × 100
• Output per Employee: Clearly defined business output ÷ average headcount

Employee Surveys

• Survey Participation Rate: Completed responses ÷ eligible survey population × 100
• eNPS: Percentage of promoters − percentage of detractors, when your organization intentionally uses the Employee Net Promoter Score methodology

Overtime and Workforce Size

• Overtime as a Percentage of Hours Worked: Overtime hours ÷ total hours worked × 100
• Average Overtime per Employee: Overtime hours ÷ relevant average headcount
• Average Headcount: For a simple two-point calculation, (beginning headcount + ending headcount) ÷ 2
• Span of Control: Direct reports ÷ managers included in the analysis

These additional metrics are not automatically required. Add them when they help answer a question that your current dashboard cannot answer.

How to Implement HR KPIs Without Creating an Overcomplicated Dashboard

1. Define the business question. Decide what you are trying to improve or understand.
2. Select 5 to 7 relevant KPIs. Avoid adding metrics simply because the data is available.
3. Write down each formula and definition. Decide exactly what is included in the numerator, denominator, population, and period.
4. Establish a baseline. Calculate previous periods using the same methodology when reliable data is available.
5. Segment when useful. Review departments, locations, job groups, managers, tenure, or other relevant populations rather than relying only on company-wide averages.
6. Investigate before acting. Use a KPI as a signal that points to a question, not as automatic proof of a cause.
7. Define an action and owner. Decide what will change, who is responsible, and when the result will be reviewed again.
8. Review the trend consistently. Keep the measurement method stable so that one period can be compared with another.

A simple spreadsheet with consistent definitions can be more useful than a complex dashboard containing dozens of metrics that no one uses to make decisions.

Common HR KPI Mistakes

Tracking Too Many Metrics

More metrics do not automatically create better management.

If a KPI does not support a decision, investigation, or business objective, question whether it belongs on your recurring dashboard.

Changing the Formula Between Periods

A trend becomes difficult to interpret if you change definitions, cost categories, employee populations, or calculation periods without documenting the change.

Using a Benchmark as an Automatic Target

An external benchmark can provide context, but it may represent a different industry, company size, geography, job population, or methodology.

Document the source and definition before comparing your results with an external number.

Treating Correlation as the Cause

If turnover and employee survey scores change at the same time, that does not prove that one caused the other.

Use metrics to identify patterns and then investigate the process, employee population, and available qualitative evidence.

Looking Only at Company-Wide Averages

An acceptable average can hide a serious problem in one department, job group, manager, or location.

Segment the metric when doing so produces a meaningful and sufficiently reliable comparison.

Collecting Data Without Making Decisions

The purpose of an HR KPI is not to complete a monthly report.

Each recurring metric should help answer a management question such as:

• Where is turnover increasing?
• Which recruiting stage is slowing hiring?
• What is driving recruiting cost?
• Are employees moving into internal opportunities?
• Is a safety trend getting better or worse?
• Does a pay difference require deeper analysis?

Frequently Asked Questions About HR KPIs

What Are HR KPIs?

HR KPIs are measurable indicators used to track aspects of workforce and human resources performance, such as recruiting, turnover, employee experience, compensation, labor cost, development, and workplace safety.

What Is the Difference Between an HR Metric and an HR KPI?

An HR metric is any measurable workforce-related value. A KPI is a metric that has been selected because it is particularly important for monitoring a defined objective or area of performance.

For example, you may collect dozens of HR metrics, but only a few may deserve regular attention from management.

How Many HR KPIs Should a Small Business Track?

There is no universal number. As a practical starting point, selecting 5 to 7 KPIs connected to your current priorities is usually more manageable than building a large dashboard immediately.

The appropriate number depends on the size of the organization, available data, management needs, and the questions the KPIs are expected to answer.

What HR KPIs Help Analyze Employee Turnover?

Start by separating voluntary, involuntary, and total turnover. Then examine relevant segments and complementary information such as tenure, department, role, manager, compensation, employee survey data, and exit feedback.

No single turnover KPI identifies the reason employees leave.

How Often Should HR KPIs Be Reviewed?

The frequency should match the metric and the decision it supports.

Recruiting and turnover measures may be reviewed monthly or quarterly, while some compensation or employee survey analyses may be more useful at longer intervals. Small sample sizes may also require longer periods before a trend becomes meaningful.

Can a Small Business Track HR KPIs Without HR Software?

Yes. A spreadsheet can be enough to begin if the business has reliable source data, clearly defined formulas, consistent measurement periods, and appropriate controls for employee information.

Software becomes more valuable as data volume, user access, automation, integrations, compliance needs, and reporting complexity increase.

Should I Use Industry Benchmarks for HR KPIs?

Benchmarks can provide useful context when the underlying population and methodology are genuinely comparable.

Before using one, check the industry, organization size, geography, employee population, period, formula, and data source. An external benchmark should support analysis rather than replace your own historical trend and business objectives.

Use HR KPIs to Ask Better Management Questions

Human resources metrics are most useful when they move the conversation from impressions to evidence.

A rising turnover rate can tell you where to investigate. Time to fill can reveal that recruiting is slowing down. Cost per hire can show where recruiting resources are being consumed. A safety rate can reveal a trend that needs attention. A pay analysis can identify differences that deserve closer review.

But none of these numbers should be interpreted in isolation.

A practical approach is:

business question → KPI → consistent formula → baseline → segmentation → investigation → action → follow-up

Start with a small set of indicators, define exactly how each one is calculated, review the trend consistently, and add new metrics only when they help you make a better decision.