WebToolArcHow to use this Lunch Break Calculator
Enter shift start/end plus lunch out/in times to calculate gross shift length, break duration, and net worked hours.
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Date & Time
Lunch Break Calculator
Enter shift start/end plus lunch out/in times to calculate gross shift length, break duration, and net worked hours.
—Net worked time
—Lunch duration
—Gross shift
—Decimal hours
Lunch Break Calculator: Net Hours & Overtime Audit
Compute gross shift, unpaid break, net worked time, decimal hours and an optional daily overtime threshold.
Core timing workflows
Start with a direct timer, stopwatch, alarm or focus workflow. Calendar, date arithmetic, clocks and scheduling specialists remain available from the full Date & Time hub.
Online TimerCountdown, sound, repeat & fullscreenStopwatchLaps, precision & fullscreenCountdown TimerFocused countdown workflowAlarm ClockAlarm at a local clock timePomodoroFocus and break cyclesInterval TimerWork/rest roundsPresentation TimerTalk timing with warningsClassroom TimerProjector-friendly countdown
Practical guide and verification
Treat overnight shifts as a calendar boundary, not a negative duration
If a shift starts late in the evening and ends after midnight, the end time belongs to the next day. Confirm that the calculator treats this as an overnight interval rather than subtracting the times as if both occurred on the same date.
Break length should be subtracted from elapsed work time
Net worked time is the shift span minus the unpaid break duration. Enter break start and end consistently, and verify that a break outside the shift or a break longer than the shift is not accepted as a plausible result.
Decimal hours and clock hours are different representations
Thirty minutes is 0.5 decimal hours, not 0.30 hours. When copying a total into payroll or a spreadsheet, check whether the destination expects hh:mm or decimal hours so a correct time interval is not misinterpreted.
Overtime rules are separate from time arithmetic
A calculator can establish worked hours, but overtime thresholds, paid meal periods, rounding policies and penalties can differ by employer or jurisdiction. Preserve the raw start, break and end evidence before applying any policy-specific rule.
Cross-check a result with a simple manual timeline
Write the gross interval, subtract the break, then compare that net total with the displayed minutes and decimal hours. For an eight-hour gross span with a 30-minute unpaid meal, the net result should be 7 hours 30 minutes, or 7.5 decimal hours.