Tip: All calculations run locally. DST rules are applied automatically based on the selected dates.
Calculation Results
Calculation Results
Enter your inputs and click Calculate. Results will appear here.
Normalized duration:
Total days:
Total hours:
Total minutes:
Total seconds:
Result time:
UTC:
Unix (seconds):
Unix (milliseconds):
Calculation Information
How It Works
The Time Duration Calculator offers two modes: calculating the exact difference between two date-times, or adding/subtracting a specific duration to/from a base time to find a resulting date-time.
Formulas
The core logic is as follows:
- Duration = |End Time - Start Time|
- Result Time = Base Time + Duration
- Result Time = Base Time - Duration
Time Unit Conversions
- 1 Day = 24 Hours = 1440 Minutes = 86400 Seconds
- 1 Hour = 60 Minutes = 3600 Seconds
- 1 Minute = 60 Seconds
