Time Card Calculator
Punch in and punch out for each workday, deduct unpaid lunch breaks, and instantly calculate your daily net hours, decimal totals, and weekly overtime pay.
Quick Answer: Time Card Calculation Formula
To calculate net time card hours for any shift, subtract your clock-in time from your clock-out time, then deduct all unpaid lunch or meal break minutes:
• Standard Example: Clock in at 08:30, clock out at 17:00 (8h 30m) with a 30-minute unpaid break = 8.00 paid hours.
• Decimal Hours: Divide remaining minutes by 60 (e.g. 45 min ÷ 60 = 0.75 hours) for direct payroll timesheet entry.
Total Work Hours
35:00
35.00 decimal hrs
Regular Hours
35:00
35.00 decimal hrs
Overtime Hours
0:00
0.00 decimal hrs
Days Worked
5 days
Avg: 7:00/day (7.00h)
Weekly overtime threshold: 40 hours/week (Multiplier: 1.5x). Based on standard US FLSA rules; specific state or contract rules (e.g. CA daily overtime) may apply.
How to Calculate Time Card Hours
1. Record Clock-In & Clock-Out: Enter the exact time you began work and the time you finished in 12-hour (AM/PM) or 24-hour military format.
2. Enter Unpaid Meal Breaks: Enter total minutes taken for unpaid meal breaks (e.g., 30 or 60 minutes). Do not deduct short 5- to 20-minute rest breaks.
3. Check Decimal & Overtime Breakdown: Review your daily total in decimal hours for payroll records. When weekly hours exceed 40, overtime hours are automatically separated.
Labor Standards & Federal Compliance
Under the US Fair Labor Standards Act (FLSA), accurately tracking employee hours is mandatory for non-exempt workers. Review official guidelines:
- Compensable Time: Under 29 CFR Part 785, employees must be compensated for all hours they are suffered or permitted to work.
- Meal Periods vs Rest Breaks: Bona fide meal periods (ordinarily 30 minutes or more) are not compensable when the employee is completely relieved from duty (DOL Fact Sheet #22). Short breaks of 5 to 20 minutes must be counted as paid hours worked.
Frequently Asked Questions
How do I calculate time card hours with a lunch break?
Subtract your clock-in time from your clock-out time to find total elapsed time, then subtract your unpaid meal break in minutes. For example, 08:30 to 17:00 is 8 hours 30 minutes. Subtracting a 30-minute unpaid lunch leaves 8.00 paid work hours.
Does this time card calculator handle overnight shifts that cross midnight?
Yes. If your clock-out time is numerically earlier than your clock-in time (e.g., clock in at 22:00 / 10:00 PM and clock out at 06:00 / 6:00 AM), the calculator automatically detects the midnight transition and computes the correct duration without manual adjustment.
Are 15-minute rest breaks deducted on a time card?
Under federal law (FLSA 29 CFR § 785.18), short rest breaks between 5 and 20 minutes are compensable hours worked and should not be deducted from your time card. Only bona fide meal periods (typically 30 minutes or longer where the employee is completely relieved from duty) are unpaid.
How do I convert time card minutes to decimal hours for payroll?
Divide the minutes by 60. For instance, 15 minutes is 0.25 hours, 30 minutes is 0.50 hours, and 45 minutes is 0.75 hours. Shiftfy automatically displays your daily and weekly hours in both standard hours & minutes (HH:MM) and decimal format (0.00).
How is weekly overtime calculated from a time card?
Under federal FLSA guidelines, non-exempt employees earn overtime pay (1.5x regular pay) for all hours worked over 40 in a single workweek. The calculator computes total daily hours and automatically breaks down regular vs. overtime hours at the end of the week.
Related Time & Payroll Calculators
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