Guide
Understand your Time Duration result
How many hours are between two times? This time duration calculator finds the exact hours and minutes between a start time and end time, including overnight shifts and total minutes.
Results are for general information. Review the site disclaimer before using a result for an important decision.
How many hours are between two times?
Convert the start and end into minutes after midnight, then subtract the start from the end. For example, 09:15 is 555 minutes and 17:45 is 1,065 minutes.
The difference is 510 minutes. Divide by 60 to get 8 complete hours, with 30 minutes remaining, so the time between 09:15 and 17:45 is 8 hours 30 minutes.
How to calculate minutes between two times
For a result entirely in minutes, keep both times as minutes after midnight and subtract. From 10:20 to 11:05, the difference is 665 minus 620, which equals 45 minutes.
Total minutes are useful for short appointments, lessons, exercise sessions, travel connections, and any task where an hours-and-minutes result would be less convenient.
Calculate time across midnight
When a shift or journey starts late and ends after midnight, the end time is on the next day. Marking that option tells the calculator to continue past midnight rather than treat the end as earlier than the start.
For example, 22:30 to 06:30 the next day is 8 hours, not a negative time difference.
Duration is not always paid time
A total time span may include unpaid breaks, waiting time, or a meal break. Subtract those separately when you need working time rather than the full time between arrival and departure.
For payroll, attendance, travel tickets, or an official deadline, use the calculator as a quick check and follow the applicable records or rules.