Work Hours Calculator
Calculate your total hours and minutes worked using clock-in and clock-out times. Handles overnight shifts and converts to decimal hours for timesheets.
Quick shift presets:
Time Breakdown
Net Time Worked
Decimal Hours
Break Time
Shift Summary
Related Calculators
How to Calculate Work Hours
Calculating work hours is simple: subtract your start time from your end time, then subtract any break time. This gives you the total hours and minutes you worked during a shift.
Quick Tip
For timesheets and billing, use decimal hours. For example, 7 hours 30 minutes = 7.50 decimal hours.
Calculate Hours and Minutes Worked
Converting time to hours and minutes involves these steps:
- Convert start and end times to minutes from midnight
- Subtract start from end (add 24 hours if overnight)
- Subtract break time in minutes
- Divide by 60 for hours, remainder is minutes
Work Hours Formula
Example Calculation
- Start: 9:00 AM
- End: 5:30 PM
- Break: 30 minutes
- Total Time: 8h 30m − 30m break
- Work Hours: 8h 0m (8.00 decimal)
Overnight Shift Example
- Start: 10:00 PM
- End: 6:00 AM (next day)
- Break: 30 minutes
- Total Time: 8h 0m − 30m break
- Work Hours: 7h 30m (7.50 decimal)
Work Hours Reference Table
Quick reference for common shift lengths and break times.
| Shift Length | Break Time | Total Work | Decimal Hours |
|---|---|---|---|
| 4 hours | 0 min | 4h 0m | 4.00 |
| 6 hours | 15 min | 5h 45m | 5.75 |
| 8 hours | 30 min | 7h 30m | 7.50 |
| 8 hours | 1 hr | 7h 0m | 7.00 |
| 9 hours | 30 min | 8h 30m | 8.50 |
| 10 hours | 1 hr | 9h 0m | 9.00 |
| 12 hours | 1 hr | 11h 0m | 11.00 |
Frequently Asked Questions
How do you calculate work hours?
To calculate work hours, subtract your start time from your end time, then subtract any break time. For example, if you start at 9:00 AM and end at 5:00 PM with a 30-minute break: 8 hours total minus 30 minutes = 7.5 hours worked.
How do I calculate hours and minutes worked?
Calculate the total minutes between start and end time, subtract break minutes, then divide by 60 to get hours. The remainder is minutes. For example, 470 minutes ÷ 60 = 7 hours and 50 minutes.
Can this calculator handle overnight shifts?
Yes! If your end time is earlier than your start time, the calculator automatically detects an overnight shift. For example, 10:00 PM to 6:00 AM is calculated as 8 hours crossing midnight.
Should break time be included in work hours?
It depends on your employer policy. Paid breaks are typically included in work hours, while unpaid breaks (like lunch) are usually deducted. This calculator lets you specify break time to deduct from your total.
Tips for Tracking Work Hours
Be Consistent
Record your clock-in and clock-out times at the same moment each day.
Track Breaks
Always note break times separately to ensure accurate hour totals.
Use Decimal Hours
Convert to decimal for billing and timesheets (30 min = 0.50 hours).
Verify Weekly
Review your weekly totals to catch any recording errors early.
Calculate Your Work Hours Now
Use our free work hours calculator above to instantly calculate your total time worked. Perfect for timesheets, payroll, and tracking your daily hours.