Add or Subtract Days
Add or subtract days, weeks, months, years or business days from any date and see the resulting date and weekday.
Add or subtract
Monday, November 9, 2026
October 10, 2026 plus 30 days.
How it works
Days and weeks are added as calendar days. Months and years keep the same day of the month when it exists; adding one month to January 31 gives the last day of February. Business days skip Saturdays, Sundays and US federal holidays, using the observed weekday when a holiday falls on a weekend.