Add or subtract days from a date

How it works

Pick a start date, choose add or subtract, then enter a number of days, weeks, months or years. Days and weeks are simple: a week is always seven days. Months and years follow the calendar, so one month after January 15 is February 15. If the target month is shorter, the answer moves to that month's last day: one month after January 31 is February 28, or 29 in a leap year.

Tick Count working days only to skip Saturdays and Sundays, which is how most business and shipping deadlines are counted. Public holidays are not skipped, because they differ from country to country.

Everything is worked out in your browser, using your own time zone. Nothing you enter is sent anywhere.