Time Duration Calculator
Find the time between two clocks — including when the span runs overnight.
Duration
From 09:30 to 17:45 is 8h 15m 0s.
Worked example
From 09:30 to 17:45 is 8 hours and 15 minutes. If the end clock is earlier than the start, the span crosses midnight: 22:00 to 06:30 is 8 hours and 30 minutes.
FAQ
- What time format should I use?
- A 24-hour clock, hours and minutes, such as 09:30. You can add seconds too, such as 09:30:15.
- Does an earlier end time count as the next day?
- Yes. The calculator adds 24 hours when the end is before the start, and it says so under the result.
- Can I enter 12-hour times with am and pm?
- No. Convert them first. 5:45 pm is 17:45.