Time Card Calculator
Calculate total work hours from clock-in and clock-out times, subtract unpaid breaks, and estimate regular time, overtime, and gross pay for the week.
Turn a weekly time card into hours and pay
A time card calculator totals work hours and pay from clock-in times, clock-out times, breaks, and hourly rates. It subtracts unpaid break minutes from total shift time and converts the result into decimal hours.
Use it for a simple weekly timesheet, hourly payroll estimate, contractor invoice check, or overtime planning before submitting hours.
How to use the time card calculator
- Enter your hourly rate: Use your gross hourly wage before taxes and deductions.
- Set overtime rules: The default is overtime after 40 weekly hours at 1.5x, but you can change the threshold and multiplier.
- Add clock times: Enter clock-in, clock-out, and unpaid break minutes for each day worked.
- Choose rounding: Select no rounding or a common time-card rounding increment.
- Calculate: The result shows total hours, regular hours, overtime hours, break time, daily details, and estimated gross pay.
Time card formula
The time card calculation starts with elapsed shift time. Calculate time card hours by subtracting unpaid breaks from total shift time, then split the weekly total into regular and overtime hours.
Daily hours = clock-out time - clock-in time - unpaid break
Regular hours = min(total hours, overtime threshold)
Overtime hours = max(total hours - overtime threshold, 0)
Weekly pay = regular hours x regular rate + overtime hours x overtime rate
For example, five 8-hour workdays total 40 hours. At $25 per hour with no overtime, the estimated gross pay is $1,000 before taxes and deductions.
Worked examples
Use these examples to check whether your result makes sense before you copy hours into payroll or an invoice.
| Scenario | Calculation | Result |
|---|---|---|
| 9:00 AM to 5:30 PM with a 30-minute unpaid lunch | 8.5 hours - 0.5 hour | 8.00 paid hours |
| Five 8-hour days at $25/hour | 40 x $25 | $1,000 gross pay |
| 46 hours, overtime after 40 at 1.5x | 40 regular + 6 overtime | Overtime paid at 1.5x |
What this calculator includes
The calculator is designed for quick weekly gross-pay planning. It handles common time-card math, but payroll rules can vary by employer, location, contract, and worker classification.
Included
Clock time, unpaid breaks, optional rounding, weekly overtime threshold, overtime multiplier, and gross pay.
Not included
Taxes, deductions, PTO, sick leave, holiday premiums, split shifts, meal penalties, tips, commissions, or reimbursements.
Best use
Checking timesheet totals, estimating gross pay, reviewing overtime, and comparing rounded versus unrounded hours.
Time card rounding and decimal-hour conversion
Many payroll systems store time as decimal hours, not clock minutes. This is why a shift that looks like 7 hours and 45 minutes may appear as 7.75 hours on a timesheet or paycheck report.
| Minutes | Decimal hours | Common use |
|---|---|---|
| 15 minutes | 0.25 hours | Quarter-hour time entries |
| 30 minutes | 0.50 hours | Half-hour lunch or break deduction |
| 45 minutes | 0.75 hours | Partial-hour shift totals |
| 6 minutes | 0.10 hours | One-tenth-hour payroll increments |
If your workplace rounds time, compare the rounded total with the raw total before submitting. Small daily differences can become meaningful over a full pay period, especially when the weekly total is close to the overtime threshold.
Time-clock rounding reference: eCFR - 29 CFR 785.48, Use of time clocks.
Paid breaks, unpaid meals, and missing punches
Break handling is one of the easiest places for time-card totals to go wrong. The calculator subtracts the break minutes you enter, so only enter break time that should be unpaid for your situation.
Unpaid meal breaks
Enter lunch or meal periods that should be removed from paid time, such as a 30-minute unpaid meal break.
Paid rest breaks
Do not subtract paid rest breaks unless your employer's policy says they should be deducted from the time card.
Missing punches
If a clock-in or clock-out is missing, confirm the exact time before calculating pay. Guessing can distort daily hours and overtime.
Hours-worked reference: U.S. Department of Labor - Fact Sheet #22: Hours Worked Under the FLSA.
Before you submit your timesheet
Use the calculator result as a review step, not just a number. A clean time card should match the pay period, work schedule, employer policy, and any notes your manager needs to approve.
Match the pay period
Check that all entries belong to the same payroll week or pay period before comparing totals.
Review overtime triggers
If total hours are close to the overtime threshold, verify the workweek definition and whether daily overtime, holiday pay, or contract rules apply.
Check rate and classification
Make sure the hourly rate, overtime multiplier, and worker classification match the payroll system.
Keep notes for exceptions
Add notes for overnight shifts, corrected punches, unpaid meal changes, travel time, training time, or manager-approved schedule changes.
Recordkeeping reference: U.S. Department of Labor - Fact Sheet #21: FLSA Recordkeeping Requirements.
Interesting Fact
According to the U.S. Bureau of Labor Statistics, 80.3 million U.S. workers age 16 and older were paid hourly rates in 2024, representing 55.6% of all wage and salary workers. That means time cards, clock punches, unpaid breaks, and decimal-hour totals affect more than half of the wage-and-salary workforce. A small rounding issue or missing break entry may look minor on one shift, but it can become meaningful across many pay periods. Source: U.S. Bureau of Labor Statistics - Characteristics of Minimum Wage Workers, 2024.
Frequently Asked Questions
What is a time card calculator?
A time card calculator adds up employee work hours from clock-in and clock-out times. It subtracts unpaid breaks, converts minutes into decimal hours, and can estimate regular pay, overtime pay, total gross pay, and basic labor cost for a weekly timesheet or pay period.
How do I calculate hours worked from a time card?
Subtract the clock-in time from the clock-out time for each shift, then subtract any unpaid break or lunch. For example, 9:00 AM to 5:30 PM is 8.5 hours; after a 30-minute unpaid lunch, the paid time is 8.0 hours. Repeat that process across the workweek to get total hours for attendance, payroll, or manager review.
Does this calculator handle overtime?
Yes. It separates total hours into regular hours and overtime hours using the overtime threshold you enter. The default setup uses 40 weekly hours and a 1.5x overtime multiplier, but you can adjust the threshold, wage, and pay rate to match your payroll policy or work schedule.
Can I use it for overnight shifts?
Yes. If the clock-out time is earlier than the clock-in time, the calculator treats the shift as crossing midnight. That is useful for night shifts, late restaurant shifts, security work, healthcare schedules, and other overnight jobs. For official payroll, confirm how the shift should be assigned within the pay period, especially if the hours cross two calendar days.
Should I subtract paid breaks from my time card?
Usually, you should only subtract breaks that are unpaid, such as an unpaid lunch period. Paid rest breaks should generally stay in the worked-hours total unless your employer's policy or payroll system says otherwise. When in doubt, ask a manager or payroll contact before changing the break minutes.
Why does my timesheet show decimal hours instead of minutes?
Payroll systems often convert minutes into decimal hours because wages are easier to calculate that way. For example, 15 minutes equals 0.25 hours, 30 minutes equals 0.50 hours, and 45 minutes equals 0.75 hours. This calculator shows totals in decimal hours so the result is easier to compare with payroll reports.
What should I do if I forgot to clock in or clock out?
Use the best confirmed time rather than guessing. Check your work schedule, messages, job tickets, security logs, or manager approval notes, then enter the corrected clock-in or clock-out time. If the missed punch affects attendance or overtime, document the correction before submitting the timesheet.
Is gross pay the same as take-home pay?
No. Gross pay is the amount before taxes, deductions, benefits, retirement contributions, garnishments, or other payroll adjustments. Take-home pay is the net amount an employee receives after those items are applied, so it can be lower than the calculator's gross-pay estimate.
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Disclaimer: This time card calculator provides general planning estimates only. It does not replace an official employer timekeeping system, payroll software, employment contract, labor-law guidance, or professional payroll advice. Actual pay may depend on local overtime rules, rounding policies, paid breaks, unpaid meal periods, tips, commissions, shift differentials, holiday pay, deductions, taxes, and employer-specific policies.
Last updated: June 28, 2026