Hours Calculator
Enter your start and end times for each day to total the hours on your time card, with breaks, overtime and pay.
Results
This is the result for your previous entries. Finish entering your numbers to update it.
Enter a start and end time for at least one day to see your hours.
Total hours
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Decimal hours
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Overtime hours
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Gross pay
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Time card
| Day | Start | End | Break | Hours | Decimal |
|---|
Hours by day
How it's worked out
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How to use the hours calculator
- Enter the start and end time for each day you worked. Leave both fields blank for days off.
- Enter any unpaid break in minutes, such as a 30-minute lunch.
- Optionally add your hourly rate to see your gross pay, and tick "Pay overtime" if hours over a weekly limit are paid at a higher rate.
- If your employer rounds clock-in and clock-out times, choose the same rounding so your totals match your pay stub.
The totals update as you type. Each day's hours appear next to the row, and the full time card, a chart and the working are shown in the results.
How the hours are calculated
For each day the calculator works out:
Hours worked = end time − start time − unpaid break
If the end time is earlier than the start time, the shift is treated as ending the next day, so 10:00 PM to 6:00 AM counts as 8 hours. The daily figures are added for the week, then shown two ways: as hours and minutes (38 h 15 min) and as decimal hours (38.25), which is the number payroll uses.
To turn minutes into decimal hours, divide by 60. With pay switched on, regular hours are paid at your hourly rate, and any hours above the overtime threshold are paid at the rate times the overtime multiplier:
Pay = regular hours × rate + overtime hours × rate × 1.5
Worked example
Sam works 8:00 AM to 5:30 PM, Monday to Friday, with a 30-minute unpaid lunch, and earns $20 an hour with overtime after 40 hours.
- Each day: 5:30 PM − 8:00 AM = 9 h 30 min, minus 30 min = 9 hours.
- Week: 5 × 9 = 45 hours, of which 40 are regular and 5 are overtime.
- Regular pay: 40 × $20 = $800. Overtime pay: 5 × $20 × 1.5 = $150.
- Gross pay: $800 + $150 = $950.
Minutes to decimal hours
| Minutes | Decimal hours | Minutes | Decimal hours |
|---|---|---|---|
| 5 | 0.08 | 30 | 0.50 |
| 6 | 0.10 | 36 | 0.60 |
| 10 | 0.17 | 40 | 0.67 |
| 12 | 0.20 | 45 | 0.75 |
| 15 | 0.25 | 50 | 0.83 |
| 20 | 0.33 | 55 | 0.92 |
Clock rounding rules
Many time clocks round punches to the nearest 5 minutes, 6 minutes (a tenth of an hour) or 15 minutes. With 15-minute rounding, a punch at 8:07 counts as 8:00 and a punch at 8:08 counts as 8:15. US federal rules allow rounding only if, over time, it doesn't reduce the hours employees are paid for. Choosing the same rounding here shows you exactly what your employer's system should record.
Frequently asked questions
How do I calculate the hours I worked?
Subtract your start time from your end time, then subtract any unpaid break. For example, 8:45 AM to 5:15 PM is 8 hours 30 minutes; with a 30-minute unpaid lunch that leaves 8 hours worked. Do this for each day and add the days together for your weekly total.
How do I convert minutes to decimal hours?
Divide the minutes by 60. 15 minutes is 0.25 hours, 30 minutes is 0.5 hours and 45 minutes is 0.75 hours, so 7 hours 45 minutes is 7.75 hours. Payroll usually needs decimal hours because pay is hourly rate × decimal hours.
How does the calculator handle overnight shifts?
If the end time is earlier than the start time, the calculator assumes the shift finished the next day. A shift from 10:00 PM to 6:00 AM is counted as 8 hours, not a negative number.
When do I get overtime pay?
Under the federal Fair Labor Standards Act, non-exempt employees must be paid at least 1.5 times their regular rate for hours over 40 in a workweek. Some states add their own rules; California, for example, also requires overtime after 8 hours in a single day. Tick "Pay overtime" and set the threshold and rate that apply to you.
Should breaks be subtracted from my hours?
Only unpaid breaks. Under US federal rules, short rest breaks of about 5 to 20 minutes count as paid work time, while a meal break of 30 minutes or more when you are fully relieved of duty is normally unpaid. Enter only the unpaid break time in the Break column.