Count dates and shift calendar intervals with explicit boundary rules.
Move forward or backward from a date by calendar years, months, weeks and days.
Open calculatorMeasure the calendar interval between two dates and the total elapsed days.
Open calculatorCount total days, weekdays and weekend days between two dates.
Open calculatorCalendar months have different lengths. Adding months can clamp the day to the final valid day, while elapsed-day calculations count fixed date boundaries. Check whether the final day is included and whether weekdays exclude holidays.