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Work Hours from Clock Times
Educational shift-hours worksheet from 24-hour clock times minus unpaid break. Supports overnight shifts. Not a DOL or FLSA determination.
Limitation: Educational shift-hours worksheet only.
How to Calculate Shift Hours
Use 24-hour clock values and unpaid break minutes from your own records.
Enter start hour (0–23) and start minute (0–59).
Overnight shifts
If end is earlier than start on the clock, the worksheet assumes the shift crossed midnight.
What Worked Hours Means Here
Worked minutes equal the clock interval minus unpaid break. Decimal hours divide by 60. The page does not apply FLSA exemptions, meal-period rules, or employer rounding policies.
Hours Calculator Examples
Day shift with lunch
Clock times and break
Worked hours
9:00 to 17:30 is 510 minutes; minus 30 unpaid = 480.
Overnight shift
Clock times and break
Worked hours
22:00 to 06:00 is 480 minutes across midnight; minus 30 = 450.
Paid breaks stay in worked time
Only subtract minutes that are unpaid in your scenario.
Frequently Asked Questions
Still have questions about this calculation?
Try the CalculatorShift Hours Formulas
Clock arithmetic only; no wage or overtime tables are embedded.
Formula
Clock interval
endMinutes − startMinutes (add 1440 if overnight)
Worked minutes
interval − unpaidBreakMinutes
Decimal hours
workedMinutes ÷ 60
Scientific Background
Assumptions: user-entered unpaid break and a single continuous shift. Limitations: not FLSA hours worked, not multi-punch timekeeping, and not a state meal-break engine. See DOL Wage and Hour Division materials for official context.
Sources & review
Hours Calculator documents the references behind its formulas and assumptions. Always treat results as educational estimates, not personalized professional advice.
Last reviewed
July 22, 2026
Reference
dol.gov
https://www.dol.gov/agencies/whdFree Calculator Hub methodology
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See our methodology and corrections policy.