Hours Worked Calculator
This hours worked calculator tells you exactly how much time you put in during a shift. Enter your start time, your end time, and the length of your break in minutes, and it returns the worked time in hours and minutes as well as in decimal form. Add an hourly rate and it also works out your total pay. It handles overnight shifts that cross midnight, so it works for early mornings, night shifts, and standard office days alike — useful for timesheets, freelance invoicing, and checking your payslip.
Hours worked
In decimal
Total pay
If the end time is earlier than the start time, an overnight shift crossing midnight is assumed. The break is subtracted from the total time.
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How it works
The calculator converts your start and end times to minutes since midnight and subtracts the start from the end. If the end time is earlier than the start — a shift that runs past midnight — it adds 24 hours (1440 minutes) so the result stays positive. It then subtracts your break in minutes to get the net worked time, which it shows both as hours and minutes and as a decimal number of hours (for example 8 h 30 min equals 8.50). If you enter an hourly rate, the decimal hours are multiplied by that rate to give your total pay.
Example: a shift with a break
Take an office day from 09:00 to 18:00 with a one-hour lunch. Between clocking in and out there are 9 gross hours; subtracting the 60-minute break leaves 8 net hours of work. That break deduction is the part most often forgotten when calculating by hand: if lunch is unpaid, it has to come off the total. The calculator does it automatically through the break-in-minutes field, and it always helps to express minutes in decimal — 15 min = 0.25; 30 min = 0.5; 45 min = 0.75 — so the sums don't carry rounding errors.
From hours per day to week and month
From a day's net hours you can estimate the weekly total (by multiplying by 5 working days) and the monthly total (by multiplying the weekly figure by 4.33, the average number of weeks per month). The table uses a 5-day week; if you work 6, adjust proportionally. It shows at a glance how much a given daily shift adds up to over a month.
| Hours/day | Hours/week (5 days) | Hours/month (×4.33) |
|---|---|---|
| 6 | 30 | 129.9 |
| 7 | 35 | 151.6 |
| 8 | 40 | 173.2 |
| 9 | 45 | 194.8 |
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Preguntas frecuentes
- How does the calculator handle overnight shifts?
- If your end time is earlier than your start time, the calculator assumes the shift crossed midnight and adds 24 hours to the end. For example, a shift from 22:00 to 06:00 is counted as 8 hours, not a negative value. This makes it reliable for night shifts and early-morning finishes.
- How is the break subtracted?
- The break is entered in minutes and is subtracted from the gross time between your start and end times. So a shift from 09:00 to 17:00 (8 hours, or 480 minutes) with a 60-minute break results in 7 hours of net worked time. If the break is longer than the shift, the result is shown as zero rather than a negative number.
- What does "in decimal" mean?
- Decimal hours express minutes as a fraction of an hour instead of as minutes. For example, 8 hours and 30 minutes is 8.50 in decimal, and 8 hours and 15 minutes is 8.25. Payroll systems and invoices usually use decimal hours because they multiply cleanly by an hourly rate.
- How is total pay calculated?
- Total pay is your worked time in decimal hours multiplied by the hourly rate you enter. For instance, 7.50 hours at a rate of 20 gives 150. The pay field is optional — leave it at zero and the calculator simply shows your worked hours without a pay figure.
- Can I use it for a full week of work?
- This calculator works out a single shift at a time. To total a week, calculate each day and add the decimal-hour results together, then multiply the weekly total by your rate. Using decimal hours avoids the mistakes that come from adding hours and minutes separately.