8:00 AM – 5:30 PM with lunch
- 9.5 hours raw
- Minus 30-minute lunch = 9.0 hours worked
time calculator
Work Hours Calculator
Calculate total hours worked between two times, factoring in unpaid breaks and overnight shifts.
Results
- Total hours (decimal)
- 7.50
- Total minutes
- 450
- Hours
- 7
- Remaining minutes
- 30
How to use this calculator
- Enter clock-in and clock-out times (24-hour clock).
- Enter total unpaid break minutes.
- Get total time worked in decimal hours and hh:mm, with overnight shifts handled automatically.
Inputs explained
- Clock-in/out
- Start and end times in 24-hour format (e.g., 7 = 7 AM, 18 = 6 PM).
- Unpaid break minutes
- Sum of lunch and other unpaid breaks to subtract from total time.
How it works
We convert clock-in and clock-out times into minutes, handle crossing midnight if needed, subtract unpaid breaks, then convert the total back into hours and minutes.
The decimal hours output is perfect for payroll systems, while the hh:mm breakdown helps you share quick summaries with managers or clients.
Formula
Net minutes = (Clock-out − Clock-in) − Break minutes
When to use it
- Verifying timesheets or invoices before submission.
- Checking overtime eligibility by summing multiple shifts.
- Planning staff coverage and comparing shift lengths.
Tips & cautions
- Combine all unpaid breaks into a single minutes total before entering.
- Overnight shifts are supported—just enter the actual clock-out time (e.g., 6 for 6 AM).
- Round the decimal result according to your payroll system’s rules (e.g., 2 decimals or 15-minute increments).
- No automatic rounding rules (e.g., 6-minute or 15-minute blocks).
- Does not handle daylight saving time shifts explicitly; overnight shifts crossing DST may need manual adjustment.
- Single-shift calculation—add multiple shifts separately for multi-day totals.
Worked examples
Overnight support shift
- 10:00 PM – 6:00 AM with 15 mins break = 7.75 hours worked
Deep dive
This work hours calculator totals time between clock-in and clock-out, subtracts unpaid breaks, and handles overnight shifts. Enter start/end times and break minutes to get both decimal hours and hh:mm formats.
Use it to double-check payroll, billable hours, or staffing coverage. Apply your own rounding rules and adjust for DST if a shift crosses the changeover.
FAQs
- What if the shift crosses midnight?
- Enter the actual clock-out time (e.g., 6 for 6 AM). The calculator automatically adds 24 hours when an overnight shift is detected.
- Can I track multiple breaks?
- Add the total break minutes together (lunch + short breaks) and enter the combined number.
- Does this round to the nearest quarter hour?
- No. It shows exact time. Round manually to match your payroll or client policy.
- How do I handle daylight saving time changes?
- If a shift crosses a DST change, adjust start/end times or add/subtract an hour manually to reflect the actual worked time.
- Can I enter AM/PM instead of 24-hour time?
- Use 24-hour clock values (e.g., 1:00 PM = 13, 11:30 PM = 23:30).
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