How this time card calculator works
A time card adds up the hours you actually worked across a week. For each day, the calculator takes the elapsed time between your clock-in and clock-out, subtracts any unpaid break, and records the result as that day's worked hours. Add up all seven days and you have your weekly total.
Two details keep the result accurate. First, overnight shifts: if your clock-out time is earlier than your clock-in time, the shift crossed midnight, so the tool adds 24 hours to the clock-out before subtracting — that turns 22:00 to 06:00 into 8 hours, not minus 16. Second, overtime: in the United States, hours beyond 40 in a workweek are usually paid at 1.5 times the regular rate, so the calculator splits your weekly total into regular hours (the first 40) and overtime hours (anything above).
Reference note: converting break minutes to decimal hours is simple — divide by 60. The table below shows the common quarter-hour values.
| Minutes | Decimal hours |
|---|---|
| 15 minutes | 0.25 |
| 30 minutes | 0.50 |
| 45 minutes | 0.75 |
| 60 minutes | 1.00 |
Frequently asked questions
- How do I calculate work hours from clock-in and clock-out?
- Subtract the clock-in time from the clock-out time to get the elapsed time, then subtract any unpaid break. For example, 9:00 to 17:30 is 8 hours 30 minutes; take off a 30-minute lunch and you worked 8 hours that day.
- How do I add up a weekly timesheet?
- Work out the hours for each day from its clock-in, clock-out and break, then add the seven daily totals together. This calculator does that automatically and shows the weekly total in both decimal hours and h:mm.
- How is overtime pay calculated?
- In the United States, hours over 40 in a workweek are typically paid at 1.5 times the regular hourly rate. So the first 40 hours are regular pay and any hours beyond 40 are paid at the higher overtime rate.
- How do I subtract a lunch break?
- Enter the unpaid break in minutes for that day. The calculator converts it to hours and subtracts it from the elapsed time between clock-in and clock-out, so only paid working time is counted.
- How do I handle an overnight shift?
- If the clock-out time is earlier than the clock-in time, the shift crossed midnight. The calculator adds 24 hours to the clock-out time so the worked hours are counted correctly — for example 22:00 to 06:00 is 8 hours.
- How do I convert minutes to decimal hours?
- Divide the minutes by 60. So 15 minutes is 0.25 hours, 30 minutes is 0.5 hours, and 45 minutes is 0.75 hours. Decimal hours make it easy to multiply by an hourly rate to get pay.