How to use
- Set the start date and time.
- Set the end date and time.
- See the full breakdown and copy the Discord timestamps.
Time & Date
Duration Calculator
Calculate the exact duration between two dates and times, broken down into years, days, hours and more.
A duration calculator measures the elapsed time between a start and an end date-time. This tool shows both a human-readable breakdown (years, months, days, hours, minutes, seconds) and the totals in each single unit, and it also outputs ready-to-paste Discord timestamps for both endpoints. Everything is computed locally in your browser.
Start
End
FAQ
How is the duration calculated?
The tool takes the absolute difference in milliseconds between the two moments and converts it into calendar-style units. The breakdown uses approximate month (30-day) and year (365-day) lengths, while the totals are exact counts of days, hours, minutes and seconds.
Why offer Discord timestamps too?
Pasting the start and end timestamps into Discord lets everyone see the exact moments in their own local time zone, which pairs naturally with sharing how long something lasts. Each code uses the F (full date/time) style.
Does the order of the two dates matter?
No. The duration uses the absolute difference, so swapping start and end gives the same length. The Discord codes still reflect whichever date you entered in each field.