Compare two dates with both absolute elapsed time and a human calendar breakdown.
Duration-
Method
Calendar arithmetic method
Date-only calculations use Gregorian calendar boundaries instead of averaging months into a fixed number of seconds. Month and year additions clamp to the last valid day when necessary.
Business-day results exclude Saturday and Sunday. Public holidays are not excluded because they depend on country, region, employer, and year.
Questions
Date Duration Calculator FAQ
Why can one month have different numbers of days?
Calendar months vary from 28 to 31 days, so calendar duration is computed by stepping through actual month boundaries.
What does inclusive counting mean?
Inclusive counting includes both the start and end date, adding one day to the ordinary elapsed-day difference.
