Time Duration Calculator
Calculate the exact time between two moments in hours, minutes and seconds — including overnight durations.
Calculate Duration
Enter your start and end timeHow to Use the Time Duration Calculator
Enter your start time and end time, then click Calculate Time Duration. The calculator automatically handles durations that cross midnight.
For example, entering 10:00 PM as the start time and 6:00 AM as the end time returns a duration of 8 hours.
Frequently Asked Questions
How does the calculator handle overnight time?
If the end time is earlier than the start time, the calculator automatically assumes that the end time occurs on the following day.
Can I calculate durations including seconds?
Yes. Enter seconds for both the start and end time. The calculator will provide the exact duration down to the second.
Can I calculate a duration across different dates?
Yes. Enable the Include dates option and select the start and end dates.
Does this calculator convert time zones?
No. Both times should be entered in the same time zone. This calculator calculates the elapsed duration between the selected moments.
Can I calculate work hours?
Yes. Enter the beginning and ending time of your work period. For more advanced payroll calculations, a dedicated Time Card Calculator can also be used.
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D Singha is a Civil Engineer with expertise in bridge design, structural engineering, and infrastructure projects. He shares insights on engineering, construction practices, technology, and professional development.