About the Add Days to a Date tool
What date is 90 days from today? When was six weeks ago? Pick a start date, add or subtract any amount, and get the exact date and weekday. Switch on business days to skip Saturdays and Sundays for shipping and contract deadlines.
How to use it
- Choose a start date.
- Pick add or subtract, an amount and a unit.
- For working-day deadlines, tick “business days only”.
Frequently asked questions
What happens when I add a month to January 31?
You get the last day of February, since February has no 31st. The calculator always clamps to the last valid day of the month.