1) Choose 'Add' or 'Subtract'. 'Add' calculates a date in the future relative to your starting date. 'Subtract' calculates an earlier date.
2) Enter at least one value in the Days, Weeks, Months, or Years fields.
3) Click the "Calculate" button. Your result will appear below the form.
4) All four values can be used together.
5) All values count calendar days.