Add or subtract days, weeks, months, or years from any start date to find the resulting date — including the day of the week it lands on.
Month and year shifts roll forward when a day does not exist (e.g. Jan 31 + 1 month). Dates use local time.
What does this calculator do? It adds or subtracts a number of days, weeks, months, or years from a start date and returns the resulting date along with its day of the week.
Pick a start date, choose whether to add or subtract, enter an amount, and choose a unit of days, weeks, months, or years. The calculator shifts the start date by that amount using calendar math and returns the resulting date.
When a month-based shift would land on a day that the target month does not have, such as January 31 plus one month, the result rolls into the next month so it stays a valid calendar date. Year-based shifts behave the same way for February 29.
Yes. The resulting date is shown with its full weekday name, such as Monday or Friday, so you can see at a glance which day of the week it falls on.