Work Hours Calculator
Enter clock-in and clock-out times (24h HH:MM) to get hours worked.
Calculator
Use the Work Hours Calculator
Result
—
Formula
(end − start) ÷ 60
Step-by-step
- 1
Enter clock-in time
24-hour HH:MM format.
- 2
Enter clock-out time
Overnight shifts wrap correctly.
Worked example
Example input: start: 09:00, end: 17:30
Result: 8.5
Related tools
- Time Duration
Same result in minutes.
- Deadline Calculator
Days left until a target date.
Frequently asked questions
How many hours is 9 to 5?
9:00 to 17:00 is exactly 8 hours. Enter clock-in 09:00 and clock-out 17:00, and the calculator shows the result without manually subtracting clock times.
Does the calculator handle overnight shifts?
Yes. When the clock-out time is earlier than the clock-in time, the shift is treated as crossing midnight, so 22:00 to 06:00 returns 8 hours.
Are the results suitable for payroll?
The result is rounded to two decimal places, for example 17:15 to 18:30 gives 1.25 hours, which matches how most payroll systems record decimal hours. Breaks are not deducted automatically — subtract them yourself if needed.
Can it add up a whole week of shifts?
No. This calculator works one clock-in/clock-out pair at a time; repeat it for each day and add the daily totals together.
What is 8.5 hours in hours and minutes?
8 hours 30 minutes — the 0.5 hours beyond the eighth is 0.5 × 60 = 30 minutes. Payroll systems read 8.5, while a timesheet written 8:30 means the same span.