Work Hours Calculator
Track work hours and calculate overtime with our free time clock calculator.
Work Hours Calculator - Time Clock & Timesheet Tool
Calculate your work hours accurately with our time clock calculator. Track daily hours, calculate overtime automatically, deduct breaks, and generate timesheets for payroll. Perfect for employees, contractors, and employers managing work time.
Regular Hours
First 40 hours/week at standard pay rate
Overtime (1.5x)
Hours over 40/week or 8/day (varies by state)
Double Time (2x)
Holidays or 12+ hour days (if applicable)
Break Time Rules
- • Rest breaks (5-20 min): Usually paid, count as work time
- • Meal breaks (30+ min): Usually unpaid, don't count as work time
- • On-call breaks: Paid if you must remain on premises
- • State laws may require specific break schedules
Calculation Type
Daily Hours
Pay Information
Weekly Earnings
Daily Hours
09:00 - 17:00
Monthly Income
average per month
Hours Breakdown
Annual Summary
How it works
A work hours calculator totals the time you've worked across shifts, subtracting unpaid breaks. It's the basis for pay: total worked hours times your rate, with anything over 40 in a week potentially at the overtime premium.
Total work hours
Hours = Σ (shift end − shift start − breaks) Pay = hours × rate
- shift
- each clock-in to clock-out
- breaks
- unpaid break time
Worked example
- Five 8.5-hour shifts
- 30-min unpaid lunch each
- Each: 8.5 − 0.5 = 8 hours
- Week: 8 × 5
40 hours for the week.
Good to know
- Track breaks accurately — unpaid time shouldn't count toward worked hours.
- Hours past 40 per week often earn 1.5× under US federal rules (some states add daily overtime).
- Use decimal hours for cleaner payroll math.
Related Calculators
Frequently Asked Questions
How do I calculate hours worked from clock-in and clock-out times?
Subtract the start time from the end time, then deduct unpaid breaks. An 8:30 AM to 5:00 PM day with a 30-minute unpaid lunch is 8.5 hours minus 0.5 = 8 hours worked.
How do I convert worked minutes into decimal hours for payroll?
Divide minutes by 60: 15 minutes = 0.25, 30 = 0.50, 45 = 0.75. So 38 hours 45 minutes is entered as 38.75 hours — multiply by the hourly rate to get gross pay.
How is overtime calculated?
Under federal law (FLSA), non-exempt employees earn at least 1.5x their regular rate for hours over 40 in a workweek. Some states go further — California adds daily overtime after 8 hours and double time after 12.
Do breaks count as paid work time?
Under federal rules, short breaks of roughly 5-20 minutes are paid work time, while bona fide meal periods of 30+ minutes can be unpaid if you're fully relieved of duties. Several states mandate specific meal and rest breaks.
How many work hours are in a year or month?
A standard full-time schedule is 2,080 hours per year (40 x 52), which averages about 173 hours per month. Subtract holidays and PTO — often 10-25 days — for actual hours worked.