Hours worked calculator
Count the hours between a start and end time, minus breaks, including overnight shifts.
- ๐บ๐ธ US federal & state rules
Hours worked per shift
8 hours
9:00 AM to 5:30 PM, minus 30 min break
- Decimal
- 8
This is an example. Enter your numbers above and press the button to see your own result.
Minutes to decimal hours
| 15 minutes | 0.25 |
|---|---|
| 30 minutes | 0.5 |
| 45 minutes | 0.75 |
- Overtime is not added here. Use the time card calculator for a full week with overtime.
Show the math
| Clock time | 9:00 AM โ 5:30 PM = 8 h 30 min |
|---|---|
| Minus break | 8 h 30 min โ 30 min = 8 h |
What to do next
How it works
The calculator takes the time between start and end, subtracts the unpaid break, and shows the result in hours and minutes and as a decimal. Multiply by the number of shifts to get a weekly or pay-period total, and add a rate to see gross pay.
Things to keep in mind
This counts one kind of shift. If your days differ, the time card calculator takes each day separately and adds overtime after 40 hours.
Rounding rules vary by employer. Federal law allows rounding to the nearest quarter hour as long as it evens out over time, which is why a timesheet may show 8.25 where this page shows 8.17.
Frequently asked questions
How do I calculate hours worked?
Subtract the start time from the end time, then take off any unpaid break. 9:00 AM to 5:30 PM is 8.5 hours, and 8 hours after a 30-minute lunch.
How do I convert minutes to decimal hours?
Divide the minutes by 60. 15 minutes is 0.25, 30 minutes is 0.5 and 45 minutes is 0.75. Most payroll systems want the decimal form.
What about a shift that crosses midnight?
Enter the times as they are. If the end time is earlier than the start, the calculator treats it as the next day. 11 PM to 7 AM is 8 hours.
Is my meal break paid?
Under federal rules a meal break of 30 minutes or more is unpaid if you are fully relieved of duty. Short rest breaks of 5 to 20 minutes count as paid time and should not be subtracted.