Your hours and pay, worked out right

Free calculators for time cards, hours worked, overtime and pay. Enter your times in and out and get daily and weekly hours, decimal hours for payroll, overtime by federal or state rules and your gross pay — with the math shown.

Open the time card calculator

  • Breaks, overnight shifts and rounding
  • Federal and state overtime rules
  • Saved on your device, no sign-up

Time cards & hours

Add up shifts, breaks and weekly hours for a time card or timesheet.

Time Card CalculatorWeekly hours from in and out times, breaks, overtime and pay.Open calculator Biweekly Time CardTwo weeks of shifts, overtime per workweek, pay period total.Open calculator Hours CalculatorHours and minutes between two times, minus a break.Open calculator Add Time CalculatorAdd or subtract hours and minutes, totals in h:mm and decimal.Open calculator Time Clock RoundingRound punches to 15, 6 or 5 minutes — the 7-minute rule.Open calculator

Pay & overtime

Overtime pay, hourly and salary conversions, raises and shift differentials.

Overtime CalculatorTime and a half and double time pay for the week.Open calculator Hourly to SalaryHourly wage to yearly, monthly and paycheck amounts.Open calculator Salary to HourlyYearly salary to hourly rate and paycheck amounts.Open calculator Pay Raise CalculatorNew pay from a % raise, or the % from a new pay.Open calculator Shift DifferentialExtra pay for nights and weekends, in $ or %.Open calculator

Time conversions

Minutes to decimal hours, decimal hours to minutes, and military time.

Minutes to DecimalHours and minutes to decimal hours, with a 1–60 chart.Open calculator Decimal to Hours & Minutes7.75 hours → 7 hours 45 minutes, with a chart.Open calculator Military Time Converter24-hour military time to AM/PM and back, with a chart.Open calculator

Workdays & time off

Working days between two dates and paid time off accrual.

Work Days CalculatorBusiness days between dates, minus weekends and holidays.Open calculator PTO Accrual CalculatorPTO earned per hour, paycheck and year, and your future balance.Open calculator

From punches to a paycheck in three steps

  1. Enter your timesTime in, time out and unpaid breaks for each day — in 12- or 24-hour time. Shifts that run past midnight are handled for you.
  2. Get your hoursDaily and weekly totals in hours and minutes and in decimal hours, split into regular hours, overtime and double time under the rule that applies to you.
  3. Check your payAdd your hourly rate to see gross pay, then copy, print or download the result as a CSV to compare with your paystub.

Guides

How hours, overtime and pay periods work — and the rules behind them.

Time cards & hoursHow to calculate hours workedTimes in and out, breaks, overnight shifts and decimal hours, step by step.Read guide Pay & overtimeOvertime rules by stateFederal 40-hour rule plus daily overtime in CA, AK, NV and CO.Read guide Workdays & time offHow many work hours are in a year?2,080 hours, actual weekdays and holidays by year, hours per month.Read guide Pay & overtimeBiweekly vs semimonthly pay26 vs 24 paychecks, paycheck size, three-paycheck months and overtime.Read guide

All guides

Why use WorkHourMath?

Most pay mistakes start with a small arithmetic slip: adding 7:45 and 8:30 as decimals, forgetting that minutes carry at 60, or counting overtime over two weeks instead of one. Our calculators do the time math in minutes, show both hours and minutes and decimal hours, and apply overtime per workweek, the way federal law requires — plus the daily rules of California, Alaska and Colorado when you choose them.

Every calculator page explains the formula, works through an example you can check by hand and lists its sources, such as the Department of Labor's overtime fact sheet and the rounding rules in federal regulations. Read how we calculate for the details.

Results are estimates for information, not legal or payroll advice. Your employer's policy, a union contract or local law can change the numbers, so if your paycheck doesn't match, start with your payroll department.