Time Duration Calculator
Calculate the duration between two dates and times.
Find the duration between two dates and times. Perfect for tracking project hours, elapsed time, or event durations.
How to Use
- Select the starting date and time.
- Select the ending date and time.
- Instantly see the duration broken down into days, hours, minutes, and seconds.
Formula
Absolute difference in milliseconds converted to human-readable units.
Examples
Overnight Duration
From Jan 1 08:00 to Jan 2 12:00 is precisely 1 day and 4 hours.