Time Duration Calculator
Calculate the exact time difference between two times. Perfect for tracking work hours, meeting durations, workout sessions, or any time-based activities with precision down to the second.
Time Duration Calculator
How to Use This Calculator
Enter your start time and end time using the 24-hour format (0-23 for hours). The calculator will automatically compute the time difference in hours, minutes, and seconds. If the end time is earlier than the start time, the calculator assumes the end time is on the next day.
Understanding 24-Hour Format
The 24-hour format runs from 00:00 (midnight) to 23:59 (11:59 PM). For example, 9:30 AM is entered as 09:30, while 2:45 PM is 14:45. This format eliminates AM/PM confusion and is standard in many countries and professional settings.
Common Use Cases
This calculator is perfect for calculating work hours, billable time, meeting durations, workout sessions, study time, cooking durations, travel time, parking duration, or any activity where precise time tracking matters. It’s especially useful for timesheets and time management.
Handling Overnight Times
When calculating time that spans across midnight (for example, a night shift from 22:00 to 06:00), the calculator automatically detects this and adds 24 hours to the end time for accurate calculation. The result will show the total duration including the overnight period.
Time Calculation Examples
Example 1: 09:30:00 to 17:45:00 = 8 hours 15 minutes. Example 2: 14:20:30 to 16:50:15 = 2 hours 29 minutes 45 seconds. Example 3: 22:00:00 to 06:00:00 = 8 hours (overnight shift). The calculator handles all scenarios automatically.
Frequently Asked Questions
Q: Can I use 12-hour format? A: No, use 24-hour format (0-23). Q: What if end time is before start time? A: Assumes next day. Q: Can I calculate times across multiple days? A: No, this is for same-day or overnight calculations only. Q: How accurate is it? A: Accurate to the second.