Key Takeaways
- Total Work Hours Formula:
(Shift End Time - Shift Start Time) - Unpaid Break Duration. - Decimal Hours: Payroll and accounting software require hours in base-10 decimals (e.g., 7 hours 45 minutes =
7.75 decimal hours). - Gross Pay Calculation: Multiply total decimal hours by hourly wage (
Gross Pay = Decimal Hours × Hourly Rate). - Tracking shifts accurately prevents payroll discrepancies, employee disputes, and unpaid overtime errors.
Hours & Timesheet Calculator
Calculate total shift hours, subtract unpaid lunch breaks, convert to decimal hours, and compute gross earnings instantly.
Whether you are an hourly employee verifying your weekly paycheck, a freelancer logging billable client hours, or a small business manager running biweekly payroll, calculating work hours manually is tedious. Dealing with clock-in times, clock-out times, lunch deductions, and minutes-to-decimal conversions frequently results in costly mistakes.
In this guide, we'll explain how to calculate shift hours, how to convert minutes into decimal hours for payroll software, and show you how to use our Free Hours & Timesheet Calculator.
Step-by-Step: How to Calculate Work Hours Manually
Let's walk through an example shift:
- Clock In: 09:15 AM
- Clock Out: 05:45 PM (17:45 in 24-hour time)
- Unpaid Lunch Break: 45 minutes
- Hourly Rate: $25.00 / hour
Step 1: Convert to 24-Hour (Military) Time
Convert afternoon and evening times to 24-hour format by adding 12 hours: 05:45 PM becomes 17:45.
Step 2: Subtract Start Time from End Time
17 hours 45 minutes - 9 hours 15 minutes = 8 hours 30 minutes total elapsed time.
Step 3: Deduct Unpaid Breaks
8 hours 30 minutes - 45 minutes lunch break = 7 hours 45 minutes of actual billable work.
Step 4: Convert Minutes to Decimal Hours
To multiply by your hourly rate in payroll software, divide the remaining minutes by 60:
45 minutes ÷ 60 = 0.75 hours
Total Decimal Hours = 7 + 0.75 = 7.75 hoursStep 5: Calculate Total Gross Pay
Gross Pay = 7.75 hours × $25.00/hour = $193.75Minutes to Decimal Hours Conversion Quick Table
Bookmark this reference table for common time increments:
| Minutes | Decimal Equivalent | Minutes | Decimal Equivalent |
|---|---|---|---|
| 5 min | 0.08 hrs | 35 min | 0.58 hrs |
| 10 min | 0.17 hrs | 40 min | 0.67 hrs |
| 15 min | 0.25 hrs | 45 min | 0.75 hrs |
| 20 min | 0.33 hrs | 50 min | 0.83 hrs |
| 30 min | 0.50 hrs | 60 min | 1.00 hrs |
Features of Central Tools' Hours & Timesheet Calculator
- Flexible Time Inputs: Pick shift start and end times effortlessly with native browser time pickers.
- Custom Break Deductions: Subtract 15, 30, 45, 60-minute, or custom break times accurately.
- Automatic Pay Computation: Enter an optional hourly wage to see gross pay calculated in real time.
- Both Formats Displayed: View results simultaneously in standard Hours & Minutes and Decimal Hours.
- 100% Client-Side & Private: Shift data is never logged or saved to external databases.
Frequently Asked Questions (FAQs)
Are short coffee breaks (10-15 min) considered paid or unpaid?
Under the US Fair Labor Standards Act (FLSA) and many international labor laws, short rest breaks lasting 20 minutes or less are legally considered paid work time. Meal breaks lasting 30 minutes or longer where the employee is relieved of all duties are typically unpaid.
How does the calculator handle overnight night shifts?
If your shift begins in the evening (e.g. 10:00 PM) and finishes the next morning (e.g. 6:00 AM), the calculator automatically detects midnight rollover and calculates the exact duration (8 hours).
Calculate Your Work Hours Now
Make sure your timesheets and earnings are 100% accurate. Open our Free Hours & Timesheet Calculator and compute your shift hours in seconds.