Work Hours Calculator
Calculate daily shift hours, weekly timesheets, unpaid lunch breaks, overtime, and gross payroll earnings instantly.
Shift Start Time
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Time you clock in or start work (e.g. 09:00 AM).
Shift End Time
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Time you clock out or finish work (e.g. 05:30 PM). Handles overnight shifts automatically.
Unpaid Lunch / Break
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Total minutes of unpaid lunch or rest breaks deducted from elapsed shift time.
mins
Hourly Pay Rate
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Regular hourly wage in USD ($) for gross earnings estimation.
$
Daily Overtime Threshold
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Shift hours threshold beyond which overtime rate applies (typically 8.0 hours).
hrs
Overtime Pay Multiplier
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Overtime rate multiplier (e.g. 1.5 for time-and-a-half, 2.0 for double time).
×
| Work Component | Time (Hrs & Mins) | Decimal Hours | Gross Pay ($) |
|---|---|---|---|
| Gross Elapsed Shift | 8h 30m | 8.50 hrs | — |
| Unpaid Break Deducted | 0h 45m | 0.75 hrs | Unpaid |
| Net Paid Work Time | 7h 45m | 7.75 hrs | $193.75 |
| Regular Work Hours | 7h 45m | 7.75 hrs | $193.75 |
| Overtime Hours | 0h 00m | 0.00 hrs | $0.00 |
| Weekly Projected (5 Days) | 38h 45m | 38.75 hrs | $968.75 |
| Annual Projected (52 Weeks) | 2,015h 00m | 2,015.00 hrs | $50,375.00 |
24-Hour Time Distribution & Workload Split
Live Mathematical Derivation:
Gross Shift Time = 09:00 AM to 05:30 PM = 510 minutes (8 hours 30 mins)
Unpaid Break Deducted = 45 minutes = 0.75 decimal hours
Net Paid Work Time = 510 mins − 45 mins = 465 minutes = 7h 45m (7.75 decimal hrs)
Regular Pay = 7.75 hrs × $25.00/hr = $193.75
Overtime Pay = 0.00 hrs × ($25.00 × 1.5) = $0.00
Total Gross Earnings = $193.75 + $0.00 = $193.75
Unpaid Break Deducted = 45 minutes = 0.75 decimal hours
Net Paid Work Time = 510 mins − 45 mins = 465 minutes = 7h 45m (7.75 decimal hrs)
Regular Pay = 7.75 hrs × $25.00/hr = $193.75
Overtime Pay = 0.00 hrs × ($25.00 × 1.5) = $0.00
Total Gross Earnings = $193.75 + $0.00 = $193.75
* Results are estimates for educational and payroll verification purposes only. Actual net pay reflects payroll taxes, FICA withholdings, and state wage laws.
Understanding Work Hours, Payroll Decimals & Overtime
Accurately tracking shift hours and converting time to decimal format is essential for transparent payroll processing, Fair Labor Standards Act (FLSA) compliance, and accurate personal earnings tracking. Because minutes operate on base-60 and financial wages operate on base-10 decimals, standard conversion rules prevent rounding disputes between employers and staff.
Converting Minutes to Decimal Hours
To convert minutes into decimal format for payroll, divide the number of minutes by 60:
• 15 minutes: 15 ÷ 60 = 0.25 hours
• 30 minutes: 30 ÷ 60 = 0.50 hours
• 45 minutes: 45 ÷ 60 = 0.75 hours
A shift of 7 hours and 45 minutes is calculated as 7 + (45 ÷ 60) = 7.75 hours.
• 15 minutes: 15 ÷ 60 = 0.25 hours
• 30 minutes: 30 ÷ 60 = 0.50 hours
• 45 minutes: 45 ÷ 60 = 0.75 hours
A shift of 7 hours and 45 minutes is calculated as 7 + (45 ÷ 60) = 7.75 hours.
Federal & State Overtime Rules
Under the US FLSA, covered non-exempt employees must receive overtime pay for hours worked over 40 in a workweek at a rate not less than 1.5 times regular pay. In California, Alaska, and Nevada, daily overtime also applies after 8 hours worked in a single calendar day.
Standard Minute to Decimal Payroll Conversion Reference
| Minutes | Decimal Equivalent | Minutes | Decimal Equivalent | Minutes | Decimal Equivalent |
|---|---|---|---|---|---|
| 1 – 2 mins | 0.03 hrs | 21 – 22 mins | 0.37 hrs | 41 – 42 mins | 0.70 hrs |
| 3 – 8 mins | 0.08 – 0.13 hrs | 23 – 28 mins | 0.40 – 0.47 hrs | 43 – 48 mins | 0.73 – 0.80 hrs |
| 9 – 14 mins | 0.17 – 0.23 hrs | 29 – 34 mins | 0.50 – 0.57 hrs | 49 – 54 mins | 0.83 – 0.90 hrs |
| 15 mins | 0.25 hrs | 30 mins | 0.50 hrs | 45 mins | 0.75 hrs |
| 16 – 20 mins | 0.28 – 0.33 hrs | 35 – 40 mins | 0.60 – 0.67 hrs | 55 – 60 mins | 0.93 – 1.00 hr |
Step-by-Step Illustrative Example
Calculating a daily shift starting at 09:00 AM and ending at 05:30 PM with a 45-minute lunch break at $25.00/hr:
1. Gross Elapsed Time: From 09:00 AM to 05:30 PM is 8 hours and 30 minutes (510 minutes).
2. Deduct Unpaid Lunch: 510 minutes − 45 minutes = 465 net paid minutes.
3. Convert to Hours & Minutes: 465 ÷ 60 = 7 hours with a remainder of 45 minutes = 7h 45m.
4. Convert to Decimal Hours: 7 + (45 ÷ 60) = 7.75 decimal hours.
5. Determine Regular vs Overtime: Threshold is 8.0 hours. Since 7.75 ≤ 8.0, all 7.75 hours are regular time.
6. Calculate Gross Daily Pay: 7.75 hours × $25.00/hr = $193.75.
7. Weekly Projection (5 Shifts): 7.75 × 5 = 38.75 hours/week × $25.00 = $968.75/week.
2. Deduct Unpaid Lunch: 510 minutes − 45 minutes = 465 net paid minutes.
3. Convert to Hours & Minutes: 465 ÷ 60 = 7 hours with a remainder of 45 minutes = 7h 45m.
4. Convert to Decimal Hours: 7 + (45 ÷ 60) = 7.75 decimal hours.
5. Determine Regular vs Overtime: Threshold is 8.0 hours. Since 7.75 ≤ 8.0, all 7.75 hours are regular time.
6. Calculate Gross Daily Pay: 7.75 hours × $25.00/hr = $193.75.
7. Weekly Projection (5 Shifts): 7.75 × 5 = 38.75 hours/week × $25.00 = $968.75/week.
How to Use This Calculator
- Select Daily Shift to calculate a single workday, Weekly Timesheet to total an entire 7-day week, or Decimal Converter for fast payroll conversions.
- Enter your clock-in start time, clock-out end time, and unpaid lunch break in minutes.
- Input your hourly wage and optional overtime threshold to estimate gross earnings.
- Review your net work time in hours/minutes and decimal hours alongside the 24-hour time allocation chart.
Frequently Asked Questions
How does the calculator handle overnight shifts that cross midnight?
The calculator automatically detects overnight shifts. When your end time is earlier than your start time (e.g., clocking in at 10:00 PM and clocking out at 6:30 AM), it automatically adds 24 hours to the end time to calculate the exact elapsed duration.
Why do payroll systems require decimal hours instead of hours and minutes?
Standard mathematical operations cannot multiply base-60 minutes directly by hourly wage rates. Converting minutes into base-10 decimals (e.g. 45 minutes = 0.75 hours) allows accounting software to compute wages accurately: 7.75 hours × $25.00/hr = $193.75.
What is the 7-minute rule in employee time tracking?
Under federal FLSA regulations (29 CFR 785.48), employers may round employee punch times to the nearest 15-minute interval (quarter-hour). If an employee clocks in 1 to 7 minutes after the quarter-hour, time rounds down. If they clock in 8 to 14 minutes after, time rounds up to the next quarter-hour.
Are rest breaks under 20 minutes counted as paid work hours?
Yes. Under federal FLSA guidelines, short rest breaks running from 5 to 20 minutes must be counted as paid hours worked. Meal breaks (typically 30 minutes or longer) during which an employee is completely relieved of all duties are unpaid.