Payroll Calculators — HR
7 free payroll calculators in hr & payroll. Each tool shows step-by-step formulas, worked examples, and detailed explanations to help you get accurate results instantly.
All Payroll Calculators
Calculate back pay owed from start date to end date based on correct vs actual pay rate.
Calculate take-home pay from gross salary after federal, state, FICA, and other deductions.
Convert between hourly, daily, weekly, biweekly, monthly, and annual pay.
Calculate IRS standard mileage reimbursement for business, medical, and charitable driving.
Calculate the percentage increase or decrease between your old and new salary.
Calculate government per diem rates for meals and lodging by city and travel dates.
Calculate shift differential pay for night, weekend, and holiday shifts.
About Payroll Calculators
Our payroll calculators in hr & payroll are designed for students, professionals, and anyone who needs quick, accurate results. Every calculator includes the underlying formula, step-by-step solutions, and real-world worked examples so you can understand the math behind the answer.
Whether you need to solve a one-time problem or verify your own calculations, these free tools cover the most common payroll scenarios. All results are computed in your browser — no data is sent to any server.
What You Can Calculate
This section includes 7tools: Back Pay Calculator, Gross to Net Pay Calculator, Hourly Pay Calculator, Mileage Reimbursement Calculator, Pay Raise Percentage Calculator — Old vs New Salary, Per Diem Calculator, Shift Differential Calculator. Each calculator is free to use with no signup required.