9:00 AM to 5:30 PM
8 hr 30 min gross − 30 min unpaid lunch
Calculate Hours Worked Between Two Times
Use this time clock calculator with lunch for one completed shift: enter when you clocked in and out, subtract an unpaid break, and get paid work time in hours, minutes and decimal hours.
FreeNo sign-upRuns on your device
One completed shift
Hours worked
min
Your last start, end and break inputs save automatically on this device.
Paid work timeSame day
8 hr
8.00 decimal hours
- Gross span
- 8 hr 30 min
- Unpaid break
- − 30 min
The formula
How this calculator works
Paid work time = clock-out − clock-in − unpaid breaks
The calculator first finds the full span between your start and end times. If the end time is earlier than the start time, it treats the shift as crossing midnight. Only unpaid breaks are subtracted.
Real examples
Common workday calculations
8 hr worked
7:45 AM to 4:15 PM
8 hr 30 min gross − 45 min unpaid break
10:00 PM to 6:30 AM
8 hr 30 min overnight − 30 min unpaid break
Good to know
Edge cases and common mistakes
- An end time earlier than the start time is treated as the next day.
- Do not subtract paid breaks; they are already part of paid work time.
- Decimal hours are base 10: 7 hr 30 min equals 7.50 hours, not 7.30.
- For split shifts or several clock-ins, calculate each segment separately and add the results.
Answers
Frequently asked questions
How many hours is 9 to 5 with a 30-minute lunch?
The full span is 8 hours. Subtracting a 30-minute unpaid lunch leaves 7 hours 30 minutes of paid work.
Can I use this as a time clock calculator with lunch?
Yes. Enter one day’s clock-in and clock-out times, then subtract the unpaid lunch length. For a complete weekly time card, use the weekly calculator linked below.
Does this calculator handle an overnight shift?
Yes. If clock-out is earlier than clock-in, the calculator carries the end time into the next day.
Should I subtract my paid break?
Usually no for arithmetic purposes: a paid break remains part of paid work time. Check your workplace policy if you are unsure how a break is classified.