HR metrics are numbers that describe how well an organisation manages its people: how quickly and well it hires, how long people stay, what the workforce costs, and how engaged and capable employees are. Used well, they turn "we think we have a retention problem" into "first-year attrition in customer support has risen for three quarters, mainly in one site".
This guide lists the HR metrics and KPIs most teams track, with formulas, and explains how to choose and report them.
HR metrics vs HR KPIs
- An HR metric is any measure: number of hires, absence days, training hours.
- An HR KPI (key performance indicator) is a metric chosen because it reflects progress towards a goal, with a target and an owner. "Reduce first-year attrition in support" turns first-year attrition into a KPI.
Track many metrics if your systems produce them; report a handful of KPIs.
Recruitment metrics
| Metric | Formula | What it tells you |
|---|---|---|
| Time to hire | Days from a candidate entering the pipeline (applying or being sourced) to accepting the offer | Speed of your process for the person you hired |
| Time to fill | Days from the requisition being approved or the job being posted to offer acceptance | How long a role stays empty |
| Cost per hire | (External costs + internal costs of recruiting) ÷ number of hires in the period | Efficiency of spend |
| Applicants per opening | Applicants ÷ open roles | Reach and attractiveness of adverts |
| Stage conversion rates | Candidates moving to the next stage ÷ candidates in the stage | Where your funnel leaks |
| Offer acceptance rate | Offers accepted ÷ offers made × 100 | Competitiveness of offers and process |
| Source of hire | Hires from each source ÷ total hires × 100 | Which channels produce hires |
| Quality of hire | A composite, for example first-year performance rating, ramp-up time and retention of new hires | Whether you are hiring the right people |
| First-year attrition | Hires who left within 12 months ÷ hires in the cohort × 100 | Match between promise and job |
| Hiring manager satisfaction | Survey score after each hire | How well recruiting serves the business |
| Candidate experience score | Survey score from candidates, including those rejected | Reputation with applicants |
Definitions of time to hire and time to fill vary between organisations; pick one and stick to it. Our glossary explains time to hire and time to fill, and our time to hire calculator and cost per hire calculator do the arithmetic. For quality of hire, see quality of hire metrics.
Cost per hire inputs. External costs typically include advertising, agency fees, assessment tools, background checks, travel and relocation. Internal costs include recruiter and hiring manager time, referral bonuses and recruitment technology. Decide which you include and keep it consistent.
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Retention and turnover metrics
| Metric | Formula | Notes |
|---|---|---|
| Turnover rate | Leavers in period ÷ average headcount in period × 100 | Use average of start and end headcount, or monthly average |
| Voluntary turnover rate | Voluntary leavers ÷ average headcount × 100 | The part you can influence most |
| Involuntary turnover rate | Dismissals and redundancies ÷ average headcount × 100 | Context for performance and restructuring |
| Retention rate | Employees employed throughout the period ÷ headcount at start × 100 | The other side of turnover |
| Regretted attrition | Leavers you wanted to keep ÷ total leavers × 100 | Focuses on the loss that hurts |
| Average tenure | Sum of tenure ÷ headcount | Stability of the workforce |
| Internal mobility rate | Internal moves and promotions ÷ headcount × 100 | Career paths and redeployment |
Our turnover rate calculator and turnover cost calculator help here.
Workforce cost and productivity metrics
| Metric | Formula |
|---|---|
| Workforce cost ratio | Total workforce cost ÷ total operating cost (or revenue) × 100 |
| Revenue per employee | Revenue ÷ average FTE |
| Overtime rate | Overtime hours ÷ total hours worked × 100 |
| Span of control | Employees ÷ managers |
| HR to employee ratio | HR FTE ÷ total FTE |
Absence, wellbeing and engagement metrics
| Metric | Formula or source |
|---|---|
| Absence rate | Days lost to absence ÷ total scheduled working days × 100 |
| Average absence per employee | Days lost ÷ average headcount |
| Engagement score | Employee survey index |
| Employee recommendation score | Share of employees who would recommend you as a place to work |
| Survey participation rate | Responses ÷ employees invited × 100 |
Learning and performance metrics
| Metric | Formula or source |
|---|---|
| Training participation | Employees completing training ÷ headcount × 100 |
| Training spend per employee | Learning spend ÷ headcount |
| Time to productivity | Days from start date to agreed performance level |
| Performance distribution | Share of employees in each rating band |
| Promotion rate | Promotions ÷ headcount × 100 |
Fairness and diversity metrics
Where you collect demographic data lawfully and with appropriate safeguards, compare outcomes across groups at each hiring stage, in pay, promotion and attrition. In hiring, comparing selection rates is a common starting point; see our explainer on the four-fifths rule.
How to choose HR KPIs
- Start with business questions. "Why can't we staff the new site?" leads to time to fill, applicants per opening and offer acceptance at that site.
- Pick five to eight KPIs across hiring, retention, cost and engagement.
- Define each one once: formula, data source, owner, frequency, and what is included or excluded.
- Set targets from your own baseline, improved over time, rather than from an external benchmark that may use different definitions.
- Segment. Organisation-wide averages hide problems. Break KPIs down by team, location, role and manager.
Building an HR dashboard
- One page for leaders: the KPIs, trend lines over at least four quarters, and a short note on what changed and why.
- Drill-down for HR: the same metrics by team, location and role.
- Leading and lagging indicators together: offer acceptance and candidate experience are early signals; first-year attrition and quality of hire are later results.
- Data hygiene first. Consistent job codes, start and leave dates and leaving reasons matter more than the dashboard tool.
Our guide to HR data analytics goes further.
Common mistakes
- Tracking what is easy, not what matters. Training hours are easy to count; capability is what matters.
- Changing definitions. If time to hire is calculated differently each quarter, trends mean nothing.
- Reporting without action. Each KPI should have an owner who can act on it.
- Speed at the expense of quality. Cutting time to hire is only good if quality of hire holds.
FAQs
What are the most important HR metrics?
It depends on your goals, but most organisations track turnover (especially voluntary and first-year), time to fill, cost per hire, quality of hire, absence and engagement.
What is the difference between time to hire and time to fill?
Time to hire usually measures from when a candidate enters your process to when they accept. Time to fill usually measures from when the role is approved or posted to when an offer is accepted. Organisations define both slightly differently, so document yours.
How often should HR metrics be reported?
Monthly for operational metrics such as open roles and time to fill; quarterly for strategic KPIs such as turnover, quality of hire and engagement.