Date Calculators

Two quick calculators for date arithmetic. The result is shown immediately as you type. Date calculations are not saved and are not printed.

Add or Subtract Days

Calculate a date from a given date and duration.

Pick the start date on the calendar and enter the number of days to add. Enter a negative number to subtract days. The resulting date is displayed, including the day of the week.

Days Between Dates

Calculate the number of days between two dates.

Pick the two dates on the calendars, and the number of days between them is displayed.