Payroll Calculators — HR
Pay run arithmetic: gross to net pay, hourly pay, back pay, raise percentage, and mileage reimbursement. Gross-to-net depends on jurisdiction and filing details, so treat the output as an estimate against your actual payslip.
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
Pay run arithmetic: gross to net pay, hourly pay, back pay, raise percentage, and mileage reimbursement. Gross-to-net depends on jurisdiction and filing details, so treat the output as an estimate against your actual payslip.
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 7 tools: 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.