Free HR & Payroll Calculators for Small Business
Work out turnover, hiring costs, retention and productivity in seconds. Made for small businesses without an HR department, wherever you work.
Quick Calculator: Employee Turnover Rate
Use the same month, quarter or year for both figures.
Turnover rate for your selected period
15%
Departures ÷ average headcount × 100
THE TOOLKIT
Every HR Number You'll Ever Need to Find
Six categories covering the full spectrum of small business HR - from payroll to compliance to people analytics.
Employee Turnover Rate
Understand how many employees leave during a period and follow changes in your team.
Calculate turnover →Cost Per Hire Calculator
Bring internal and external recruiting costs together to understand what each hire costs.
Calculate hiring costs →Time to Hire Calculator
Measure the time from a candidate entering your pipeline to accepting an offer.
Measure time to hire →Retention Rate Calculator
See how many of the people you started with stayed through your selected period.
Calculate retention →Absenteeism Rate Calculator
Compare unplanned absence with available working time to spot changes early.
Calculate absence →Workforce Productivity
Connect team output with working time to understand productivity.
Measure productivity →Training ROI Calculator
Compare the financial benefits of a training program with its total cost.
Calculate training ROI →Employee Satisfaction Score
Turn employee survey responses into a clear view of how your team feels.
Measure satisfaction →YOUR COMPLETE HR TOOLBOX
Every Calculator, A-Z
One place for every calculation. Search by name or explore a category.
34 calculators across 6 categories
100% FREEHR Metrics & Analytics 6
Recruitment & Hiring 6
L&D & Budget4
Compensation & Payroll 8
Compliance & Statutory 6
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FOR TEAMS OF 5 TO 50
Built for Businesses That Don't Have an HR Team
Everything here is designed around the reality of a 5-50 person team, not an enterprise org chart.
EVERY NUMBER COUNTS.
No Software to Buy
You shouldn’t have to subscribe to an HRIS just to understand employee turnover or hiring costs. Open a calculator, enter your numbers, and get an answer. No account, demo call or sales follow-up.
Formulas You Can Trust
Start with clear formulas, transparent assumptions and worked examples. Compare your own periods and teams consistently, and check the rule each calculator models before using its result.
Built for Under 50 Employees
Every default, every assumption, every explanation is calibrated for a small team. No enterprise edge cases cluttering the interface.
HOW TO USE THE CALCULATORS
Three Steps. No Signup.
Pick Your Calculator
Browse by category or search by name. Every tool is listed - no buried navigation, no locked features.
Enter Your Numbers
Straightforward fields with plain-English labels. No jargon. Tooltips where the rule is non-obvious.
Get Your Result
Instant answer with a clear breakdown so you understand how it was calculated - not just a number.
HR GUIDES
Guides & Worked Examples from the Blog
Practical guides to recruiting, employee engagement, turnover and small-team operations, with examples you can put to work anywhere.
The Real Cost of Employee Turnover: A Worked Model for a 40-Person Company
See how recruiting, vacancies and ramp-up time contribute to the cost of an employee leaving.
Read the guide
Time to Fill vs Time to Hire: The Difference, the Benchmarks, and Which One to Report
Understand what these two hiring measures tell you, and when to use each one.
Read the guide
Employee Engagement on a Small Business Budget: What Actually Moves the Needle
Explore practical ways to support engagement in a small team.
Read the guide
HR for Small Business: The Complete Starter Guide (2026)
Get a working foundation for the people responsibilities that come with a growing team.
Read the guide
The Bradford Factor Explained: Formula, Trigger Points, and Fair Use
Learn how absence patterns are measured and why fair use matters.
Read the guideOUR METHOD
How This Site Works
SmallHRTools is a free library of more than 30 HR and payroll calculators for small businesses worldwide, especially teams of 5 to 50 people. There is no HRIS to install, no account to create and no locked preview of a paid product. Choose a tool, enter your numbers and see how the result is calculated.
Start with country-independent measures such as employee turnover, cost per hire, retention, absenteeism and headcount planning. For calculations involving money, use a consistent currency and period. Payroll, tax and employment rules vary by location, so check the scope of any regional calculator before using it.
The site is built and maintained by Aarav Patel. The About page explains our methodology and update policy. Our guides and worked examples help you understand the assumptions behind the numbers and apply them to your own team.
You never need to sign in or provide personal details to use a calculator. These tools support planning and informed conversations; they do not replace professional judgment. For payroll filings, employment obligations or other compliance decisions, confirm the applicable local requirements with a qualified professional.
HR MEASURES EXPLAINED
The HR Numbers That Matter When You Don't Have an HR Team
A small team still needs a clear view of hiring, retention, pay and productivity. These are the measures that help you ask better questions and plan your next move, whether your team works in one office or across borders. Start with a consistent period, count people and costs the same way each time, and use the result as a starting point for a conversation.
What your employee turnover rate is telling you
Turnover rate is the share of your workforce that leaves during a selected period. Turnover rate = (separations / average headcount) × 100 A team with an average headcount of 40 and six departures has a turnover rate of 15 percent for that period. Use the same period for both figures. Comparing a monthly rate with an annual rate without adjusting the period gives a misleading picture.
The number becomes more useful when you look at who leaves and why. Separate voluntary departures from employer-led exits, and compare patterns across roles, locations and tenure where your team is large enough to do so responsibly. A rise can point to workload, management, compensation or changing business needs; the rate alone does not identify the cause.
The employee turnover calculator helps you calculate your rate. Our worked turnover cost model explores the costs of recruiting, covering vacancies and bringing a new hire up to speed.
What a hire really costs you
Cost per hire brings the expenses of recruiting into one measure. Cost per hire = (internal recruiting costs + external recruiting costs) / number of hires If a quarter’s recruiting costs total 12,000 in your chosen currency and you make four hires, your cost per hire is 3,000. Use one currency and include costs and hires from the same reporting period.
External costs can include job boards, agencies, assessments and background checks. Internal costs include recruiter time, manager interviews, referral payments and other resources devoted to the hiring process. Small businesses often miss the time spent by people whose job title is not recruiter. Recording those hours produces a more useful estimate than counting invoices alone.
The cost per hire calculator helps combine these inputs. Compare similar roles and hiring channels over time. A lower figure is not automatically better if a cheaper process creates longer vacancies or hires who do not stay.
Understanding pay across different working arrangements
Annual salary, hourly pay and take-home pay answer different questions. Gross pay is the amount before deductions; net pay is the amount after applicable deductions. Taxes, social insurance, benefits and working-time rules vary by country and sometimes by state or region. A currency conversion does not account for those differences.
To compare working arrangements, begin with gross amounts and the actual paid hours in each arrangement. Equivalent hourly pay = annual gross pay / annual paid hours For example, annual pay of 52,000 over 2,080 paid hours is equivalent to 25 per hour in the same currency. Check assumptions about paid leave, overtime and unpaid time before comparing an employee salary with a contractor rate.
Use the salary-to-hourly calculator to explore different working schedules and the salary hike calculator for a percentage change in pay. Treat country-specific payroll calculations separately, using the rules that apply to the employee.
Keeping your hiring process moving
Time to fill and time to hire describe different parts of recruiting. Time to fill measures the span from a role opening to an accepted offer. Time to hire measures the span from a candidate entering your process to accepting an offer. State your chosen starting and ending events so the comparison stays consistent across periods and teams.
A role opened on day 1 and filled on day 31 takes 30 elapsed days to fill. If the successful candidate entered on day 11, their time to hire is 20 days. The gap can help you distinguish a sourcing problem from delays inside interviews, decisions or offers. Calendar-day and working-day counts should not be mixed.
Use the time to fill, time to hire and offer acceptance calculators together. The guide to time to fill versus time to hire explains how to report them.
Retention, absence and planning the next hire
Retention focuses on the people you started a period with. Retention rate = (starting employees still employed at the end / employees at the start) × 100 If 36 of the original 40 employees remain, retention is 90 percent. New hires during the period do not belong in that starting cohort. Retention is not necessarily 100 minus turnover because the measures can use different denominators.
Absenteeism compares unplanned absence with available working time. Use consistent units, such as hours for both the numerator and denominator, and interpret changes with care. Illness, disability, seasonal patterns and local leave rights matter. A metric should support fair planning and a conversation, rather than become an automatic judgment about an individual.
The retention rate calculator and absenteeism calculator help track those patterns. Use headcount planning to connect expected workload, team capacity and the time needed to recruit.
Measuring learning and how your team feels
Training return on investment compares a program’s financial benefit with its cost. Training ROI = ((financial benefit − training cost) / training cost) × 100 A program costing 2,000 with an attributable benefit of 3,000 has a 50 percent return. Use one currency and be explicit about what evidence connects the improvement to training rather than to other changes.
Some outcomes are valuable even when they are difficult to price: confidence, fewer errors, knowledge sharing and better collaboration. Pair financial measures with learning goals and employee feedback. When you use satisfaction or engagement surveys, ask consistent questions and protect individual responses, especially in a small team.
The training ROI, employee satisfaction and engagement index calculators provide useful starting points. Our small-business engagement guide connects the measures to practical actions.
USING SMALLHRTOOLS
Common Questions
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