Calculate hours worked from a start time and end time, subtract an unpaid lunch or break, and see both clock time and decimal hours.
Clock-in and clock-out math, unpaid breaks, decimal hours and weekly time-card totals.
Enter the requested values above and select Calculate. The result updates immediately on the page, so you can change one value and compare different scenarios without leaving the calculator.
8:00 AM to 4:30 PM with a 30-minute unpaid break equals 8 paid hours.
Calculate paid work hours from start time, end time and an unpaid break. It is designed for quick estimates and everyday problem solving. When a calculation affects a contract, tax filing, medical decision or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
Clock in at 8:00 AM, clock out at 4:30 PM, and take a 30-minute unpaid lunch. The elapsed shift is 8 hours 30 minutes; subtracting 30 minutes leaves 8 paid hours (8.00 decimal). A different schedule, 8:00 AM to 4:00 PM with a 30-minute lunch, is only 7.50 paid hours.
Common mistake: 7 hours 30 minutes is 7.5 hours, not 7.30. If you work overnight, confirm that the shift crossing midnight is interpreted correctly. This tool calculates time worked; overtime eligibility and paid-break rules depend on workplace policy and applicable law.
For many shifts at once, see the work schedule comparison chart.
Calculate paid work hours from start time, end time and an unpaid break.
Paid hours = elapsed shift time − unpaid break. Overnight shifts are supported.
Yes. ERICH Calculators is free to use and no account is required.
The calculator measures elapsed work time from the entries you provide. Legal compensability of waiting, meal, travel or other time can depend on applicable rules.
| Schedule | Lunch | Paid hours |
|---|---|---|
| 8:00 AM–4:30 PM | 30 min | 8.0 |
| 9:00 AM–5:00 PM | 30 min | 7.5 |
| 8:00 AM–5:00 PM | 1 hour | 8.0 |
| 9:00 AM–6:00 PM | 1 hour | 8.0 |
See the Work Hours & Time Cards topic hub for schedule-specific examples, decimal-hours conversions and time-card guides.
See how formulas, sources and limitations are handled across ERICH Calculators.