Date and Time Duration Calculator
Find the exact time between two dates and times in days, hours and minutes, or in total hours, minutes and seconds.
Duration
3 days, 8 hours, 30 minutes
- In hours
- 80.5
- In minutes
- 4,830
- In seconds
- 289,800
From 25 October 2026 09:00 to 28 October 2026 17:30 is 3 days, 8 hours and 30 minutes (80.5 hours).
How it's worked out
- FromSunday 25 October 2026, 09:00
- ToWednesday 28 October 2026, 17:30
- Difference
4,830 minutes3 d 8 h 30 min
- Counts clock time in one place. A clock change for daylight saving in between adds or removes an hour.
How it works
Duration = end date and time − start date and time
Worked example
From 9:00 on Sunday 25 October 2026 to 17:30 on Wednesday 28 October is 3 days, 8 hours and 30 minutes: 80.5 hours or 4,830 minutes.
Questions people ask
How do I calculate the time between two dates and times?
Convert both to minutes from a fixed point, subtract, then split the difference into days, hours and minutes.
How many hours are in 3 days and 8.5 hours?
80.5 hours.
Does it count daylight saving changes?
No: it counts clock time in one place. A daylight-saving change in between adds or removes an hour.
About this calculator
Formula and rules last checked 25 October 2026Written and tested by the CalculatorDex teamReport a problem