Overnight Calculation
Automatically handles times crossing midnight
Break Time Support
Deduct break times from total duration
Multiple Formats
Supports AM/PM, 24-hour formats
Detailed Breakdown
Shows hours, minutes, seconds
How to Use the Hours Calculator
Basic Calculation
Enter start and end times in any format. The calculator automatically detects overnight periods and calculates the correct duration.
Break Time Calculation
Enable break time to deduct lunch breaks or rest periods. Enter duration as 30m, 1h, 1h30m, or just 45 for minutes.
Pro Tips
- Use simple formats like "5am" or "14:00" - both work perfectly
- For overnight calculations, just enter the times - we handle the date change automatically
- Break times can be entered in hours, minutes, or combined formats
- Results show total hours, minutes, seconds, and work hours (excluding breaks)
Quick Time Calculations
Try these common time duration calculations
Frequently Asked Questions
Check "Include Break Time" and enter your break duration (e.g., "30m" for 30 minutes, "1h" for 1 hour). The calculator will automatically deduct break time from total hours and show both total duration and work hours.
We support multiple formats: 5am, 5:30pm, 17:00, 05:00, 5 AM, 5:30 PM, and more. Both 12-hour and 24-hour formats work perfectly. You can even enter simple numbers like "5" which will be treated as 5:00 AM.
If the end time is earlier than the start time, we automatically assume it's the next day. This is perfect for night shifts, overnight calculations, and scenarios where work spans across midnight. The calculator clearly indicates when overnight calculation is applied.
Absolutely! This calculator is perfect for payroll calculations. Use the break time feature to deduct lunch breaks, and you'll get accurate work hours. The results show total duration, work hours (excluding breaks), and breakdown in minutes and seconds for precise payroll processing.