How the Hours Worked Calculator Works
This tool calculates daily hours worked from start time, end time, and lunch break duration. The result is shown in both hours:minutes and decimal format, useful for payroll.
The Calculation Formula
Hours worked = End time - Start time - Lunch break
For example: start at 8:30, end at 17:30, lunch break 60 minutes:
- Total time: 17:30 - 8:30 = 9 hours
- Net hours: 9:00 - 1:00 = 8:00 hours worked
Decimal Hours Format
Decimal hours are essential for payroll management:
- 15 minutes = 0.25 hours
- 30 minutes = 0.50 hours
- 45 minutes = 0.75 hours
This format simplifies pay calculation: just multiply decimal hours by the hourly rate.
US Labor Law Basics
The Fair Labor Standards Act (FLSA) sets the standard workweek at 40 hours. Hours beyond 40 in a workweek generally require overtime pay at 1.5x the regular rate. Break requirements vary by state -- some states mandate meal breaks of 30 minutes for shifts exceeding 5-6 hours.
When to Use This Calculator
- Verify hours worked for your timesheet
- Calculate compensation by multiplying decimal hours by your hourly rate
- Track overtime hours beyond your standard schedule
- Manage time off: calculate remaining hours to make up