Hours Calculator
To calculate work hours: subtract start time from end time, then subtract break time. For example, 9:00 AM to 5:00 PM with 1 hour break = 7 hours. Overtime typically starts after 40 hours per week.
Calculate total work hours from time entries. Add multiple shifts with start/end times and breaks. Shows regular hours and overtime.
What do you want to calculate?
Calculate total hours worked from your time entries
Enter Time Entries
Entry 1
Quick presets:
hours/week
Hours Conversion Reference
| Minutes | Decimal Hours | Common Usage |
|---|---|---|
| 15 min | 0.25 | Quarter hour |
| 30 min | 0.50 | Half hour |
| 45 min | 0.75 | Three quarters |
| 60 min | 1.00 | One hour |
| 90 min | 1.50 | Hour and a half |
How to Use
- Enter your value in the input field
- Click the Calculate/Convert button
- Copy the result to your clipboard
Frequently Asked Questions
- How do I calculate hours worked?
- To calculate hours worked, subtract your start time from your end time. Convert to decimal hours if needed: minutes ÷ 60. For example, 8:30 AM to 5:15 PM = 8 hours 45 minutes = 8.75 hours. Remember to subtract unpaid lunch breaks. Our calculator handles time math automatically.
- How do I convert minutes to decimal hours?
- Divide minutes by 60 to get decimal hours. Common conversions: 15 min = 0.25 hours, 30 min = 0.5 hours, 45 min = 0.75 hours. For 8 hours 20 minutes: 20 ÷ 60 = 0.33, so total = 8.33 hours. This is essential for payroll calculations.
- How do I calculate overtime hours?
- Overtime typically begins after 40 hours per week (US federal standard) or 8 hours per day in some states. Track daily or weekly hours and subtract the threshold. If you worked 47 hours in a week, you have 7 overtime hours. Overtime is usually paid at 1.5x regular rate.
- How do I calculate pay from hours worked?
- Multiply total hours by hourly rate. For overtime, calculate regular hours at normal rate plus overtime hours at 1.5x. Example: 45 hours at $20/hour = (40 × $20) + (5 × $30) = $800 + $150 = $950 gross pay before taxes.
- How do I add hours and minutes?
- Add hours and minutes separately. If minutes exceed 60, convert to hours. Example: 3h 45m + 2h 30m = 5h 75m = 6h 15m. For subtraction, borrow 60 minutes from hours if needed. Our calculator handles all time arithmetic automatically.