How many hours is 8:30 AM to 5:00 PM with a 30-minute lunch?

From 8:30 AM to 5:00 PM is 8 hours and 30 minutes total elapsed time. Subtracting a 30-minute unpaid lunch leaves exactly 8.00 paid hours (8 hours 0 minutes).

Does this calculator handle overnight shifts that cross midnight?

Yes. If your end time is earlier in the day than your start time (such as 10:00 PM to 6:30 AM), the calculator automatically detects a midnight crossover and computes the correct 8.5 elapsed hours.

Formulas reviewed October 11, 2026 by the Home Project Calculators team ·See our methodology & sources

Clock In/Out • Break Deductions • Decimal Payroll Hours

Hours Worked Calculator

Enter your start time, end time, and unpaid break duration to instantly calculate total hours, minutes, and decimal hours worked.

Quick Presets:

How to Calculate Shift Work Hours

Calculating hours worked involves subtracting the start timestamp from the end timestamp and subtracting any unpaid meal breaks.

Shift Formulas:

1. Total Elapsed Minutes = End Minutes - Start Minutes (Add 1,440 if crossing midnight)

2. Net Paid Minutes = Total Elapsed Minutes - Unpaid Break Minutes

3. Decimal Hours = Net Paid Minutes ÷ 60

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