Calculate Time Duration
Enter a start and end time to calculate the exact duration between them.
Calculate the duration between two times quickly and accurately. Enter a start time and end time to see the elapsed hours and minutes, including time periods that continue past midnight.
About This Tool
The Time Duration Calculator finds the amount of time between a start time and an end time.
It can be used for work shifts, travel times, study sessions, events, workouts, schedules, or any situation where you need to know how much time has passed.
If the end time is earlier than the start time, the calculator treats the end time as occurring on the following day. This makes it useful for durations that pass midnight, such as a shift from 10:30 PM to 1:15 AM.
The result includes the duration in hours and minutes, along with total minutes and total seconds.
How to Use
- Enter the starting time and ending time.
- Select Calculate Duration to find the time between them. If the ending time is earlier than the starting time, it will automatically be treated as the following day.
- The result shows the elapsed hours and minutes as well as the total number of minutes and seconds.
- You can also press Enter after selecting the times to calculate the duration.
Example
Suppose a time period starts at 10:30 PM and ends at 1:15 AM.
Because the ending time is after midnight, the calculator treats 1:15 AM as occurring on the following day.
Start time: 10:30 PM
End time: 1:15 AM
Duration: 2 hours 45 minutes
Total minutes: 165
Total seconds: 9,900
Frequently Asked Questions
How do I calculate the duration between two times?
Convert both times into minutes, then subtract the start time from the end time. If the end time is earlier than the start time, the calculation can continue into the following day.
Can the calculator handle times that pass midnight?
Yes. If the end time is earlier than the start time, the calculator treats the end time as occurring on the following day.
What happens if the start and end times are the same?
The calculator returns a duration of 0 hours and 0 minutes.
Can I use this calculator for work shifts?
Yes. It can calculate the elapsed time between the beginning and end of a shift, including shifts that continue past midnight. Breaks are not automatically deducted.
Does the calculator include seconds?
The time inputs use hours and minutes, but the calculated duration is also displayed as total seconds.
Does this calculator account for dates or time zones?
No. It calculates the elapsed time between two clock times. For calculations involving specific dates, use a date-based calculator.