How it works
Days and weeks are shifted as exact calendar days. Months and years preserve the day number when it exists, otherwise the last valid day is used.
Dates and calendar
Date Add or Subtract Calculator
Choose a date, an operation and a calendar unit to find the resulting date.
Your resultFriday, September 11, 2026
Date reached after applying the calendar interval.
- Starting date
- August 12, 2026
- ISO date
- 2026-09-11
Understanding your result
The result is the calendar date reached after applying the selected interval. Weekends and holidays are included.
Last verified:
03FAQ
Frequently asked questions
Yes. This calculator uses calendar intervals.