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How to calculate hours worked
- Write down the clock-in and clock-out time for each day.
- Subtract clock-in from clock-out. If the shift crossed midnight, add 24 hours first.
- Subtract unpaid breaks, like a 30-minute lunch.
- Add the days together for the weekly total.
| Day | In | Out | Break | Hours |
|---|---|---|---|---|
| Mon | 9:00 | 17:30 | 30 min | 8:00 |
| Tue | 9:00 | 17:30 | 30 min | 8:00 |
| Wed | 9:00 | 17:30 | 30 min | 8:00 |
| Thu | 9:00 | 17:30 | 30 min | 8:00 |
| Fri | 9:00 | 17:30 | 30 min | 8:00 |
| Week | 40:00 |
How overtime is calculated
Under the US Fair Labor Standards Act, non-exempt employees are paid at least time and a half for every hour over 40 in a workweek. At $20 an hour, a 45-hour week pays 40 × $20 = $800, plus 5 × $30 = $150, for $950. Some states, like California, also count overtime by the day, so check local rules.
Source: U.S. Department of Labor, Wage and Hour Division, Fact Sheet #23: Overtime Pay Requirements of the FLSA.
Hours and minutes vs decimal hours
Payroll multiplies hours by a rate, so it needs decimals. Divide the minutes by 60: 8 hours 15 minutes is 8.25. The decimal hours calculator converts any time both ways.
| Hours:minutes | Decimal |
|---|---|
| 8:15 | 8.25 |
| 8:20 | 8.33 |
| 8:30 | 8.50 |
| 8:40 | 8.67 |
| 8:45 | 8.75 |
Track hours without filling in a timesheet
If you work on a Mac, Timecard punches you in when you start and out when you stop, and prints the day as a timecard each evening, with every app and website you used.