Calculate duration between two dates
This service calculates the duration, counting the day count and the number of days, months and years between two dates. Among other things, it can be used find how many days old you are and the weekday you were born. Also see the advanced duration calculator which supports time as well.
Help and example use
- Time and Date Duration – Calculate between exact times (not just dates)
- Date Calculator – Add or subtract days, months, years
- Weekday Calculator – What Day is this Date?
- Birthday Calculator – Find when you are 1 billion seconds old
- Week Number Calculator – Find the week number for any date