Human Resources Calculators

Attrition Rate Calculator

Calculate employee attrition rate over any measurement period, plus the annualized rate needed to compare it fairly against full-year figures.

Benefits Cost Calculator

Calculate total annual benefits cost from health insurance, retirement match, and other per-employee benefits, multiplied across your entire workforce.

Bradford Factor Calculator

Calculate the Bradford Factor score, which weights frequent short absences more heavily than one longer absence.

Cost Per Hire Calculator

Calculate cost per hire from total recruiting costs and number of hires made, a standard recruiting efficiency benchmark.

Employee Cost Calculator

Calculate the fully-loaded cost of an employee from base salary, benefits percentage, payroll tax percentage, and overhead, plus the resulting load factor.

Employee Lifetime Value Calculator

Estimate the net lifetime value an employee generates for your organization based on value produced, cost, and tenure.

Employee Satisfaction Score Calculator

Average a set of survey ratings into a single satisfaction score on a 5 or 10 point scale, with an automatic Low, Medium, or High rating applied.

Employee Severance Calculator

Estimate severance pay owed based on years of service, weekly salary, and severance weeks granted per year of tenure.

eNPS (Employee Net Promoter Score) Calculator

Calculate Employee Net Promoter Score (eNPS) from promoter, passive, and detractor survey response counts.

Headcount Planning Calculator

Calculate the required headcount for a given workload and hours per employee, rounded up to a whole number of hires for realistic staffing plans.

HR Absence Rate Calculator

Calculate employee absence rate from total days absent, headcount, and work days, with an automatic rating against typical industry benchmarks.

HR Turnover Cost Calculator

Calculate total employee turnover cost from recruiting, onboarding, and lost productivity costs per departure, multiplied by total departures.

Job Offer Acceptance Rate Calculator

Calculate your organization's job offer acceptance rate and compare it against typical healthy benchmarks.

Overtime Cost Calculator

Calculate total overtime cost from overtime hours, regular hourly rate, and multiplier, using the standard time-and-a-half or double-time formula.

PTO Accrual Calculator

Calculate an employees accrued and ending PTO balance from accrual rate, pay periods worked, PTO already used, and any starting balance carried over.

Revenue Per Employee Calculator

Calculate revenue generated per employee, a widely used efficiency benchmark for comparing companies.

Span of Control Calculator

Calculate span of control from total employees and number of managers, with an automatic rating for whether the ratio is narrow, typical, or wide.

Time to Fill Calculator

Calculate time to fill an open position from job posting date to offer acceptance date.

Training ROI Calculator

Calculate return on investment for employee training programs based on training cost and estimated productivity gains.

Workforce Diversity Ratio Calculator

Calculate the representation percentage of any employee group within your total workforce.

People Decisions, Backed by Numbers

HR decisions — hiring, retention, compensation — carry real financial weight that is easy to underestimate until it is quantified. These ten calculators cover the workforce planning and cost math HR teams rely on.

What replacing an employee actually costs: commonly cited industry research puts the cost of replacing an employee at roughly 50% to 200% of their annual salary, depending on role seniority and how specialized the position is — covering recruiting, onboarding, lost productivity during ramp-up, and the departing employee's accumulated institutional knowledge walking out the door. This is a large part of why retention initiatives, even modestly effective ones, often pay for themselves compared to the alternative of steady turnover. The HR Turnover Cost Calculator estimates that cost for your own team's roles and salary levels.

Popular Human Resources Calculators

  • Attrition Rate Calculator — calculates the percentage of employees who left over a given period.
  • Headcount Planning Calculator — projects staffing needs from workload and productivity assumptions.
  • Benefits Cost Calculator — totals the fully-loaded cost of an employee's benefits package.

Related: Career Calculators for the employee-side view of compensation, Business Calculators for broader company financials.