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
Weekly Timesheet
Clock in, clock out, and unpaid break for each day. Uncheck days you didn't work.
Overnight shifts are handled automatically (e.g. 22:00 → 06:00 = 8 hours).
Pay Information
Typically 1.5x your regular rate (time and a half)
40 hours under US federal law (FLSA)
Weekly Hours Worked
across 5 days
Weekly Pay Estimate
no overtime this week
Regular vs Overtime (over 40h)
Daily Breakdown
| Day | In | Out | Break | Hours |
|---|---|---|---|---|
| Mon | 09:00 | 17:30 | 30m | 8.00 |
| Tue | 09:00 | 17:30 | 30m | 8.00 |
| Wed | 09:00 | 17:30 | 30m | 8.00 |
| Thu | 09:00 | 17:30 | 30m | 8.00 |
| Fri | 09:00 | 17:30 | 30m | 8.00 |
| Sat | — | — | — | 0 |
| Sun | — | — | — | 0 |
| Weekly Total | 40.00 | |||
Pay Projections
Worked Example: Adding Up a Weekly Timesheet
Maria clocks in and out each day and takes a 30-minute unpaid lunch. Her hourly rate is $20, with overtime at 1.5x ($30) for hours over 40. Here is how her week adds up:
| Day | Clock In | Clock Out | Unpaid Break | Hours Worked |
|---|---|---|---|---|
| Monday | 8:30 AM | 5:00 PM | 30 min | 8.00 |
| Tuesday | 8:30 AM | 5:00 PM | 30 min | 8.00 |
| Wednesday | 8:00 AM | 6:15 PM | 30 min | 9.75 |
| Thursday | 8:30 AM | 5:00 PM | 30 min | 8.00 |
| Friday | 8:30 AM | 6:15 PM | 30 min | 9.25 |
| Weekly Total | 43.00 | |||
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 clock-in time from the clock-out 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. Enter each day's times above and the calculator does this for the whole week.
How do I add up my timesheet for the week?
Work out each day's hours (clock-out minus clock-in minus unpaid breaks), convert any minutes to decimals (8:45 = 8.75), then add the days together. Example: 8 + 8 + 8.75 + 8 + 7.5 = 40.25 hours for the week — 40 regular hours plus 0.25 overtime.
How does the lunch break deduction work?
Unpaid meal breaks are subtracted from your total shift time before hours are counted. A 9:00 to 5:30 shift is 8.5 hours on the clock, but with a 30-minute unpaid lunch you're paid for 8 hours. Short rest breaks of 5-20 minutes are normally paid and should NOT be deducted.
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. Use the decimal / hh:mm toggle above to switch between both formats.
How is overtime calculated on a weekly timesheet?
Under federal law (FLSA), non-exempt employees earn at least 1.5x their regular rate for hours over 40 in a workweek. A 46-hour week at $20/hour is 40 × $20 + 6 × $30 = $980. Some states go further — California adds daily overtime after 8 hours and double time after 12.