Use this free calculator to find the date that is a set number of days before or after any date.
How to use this calculator
Pick a start date, enter how many days to move, choose Add or Subtract, then press Calculate Date. The result shows the new date and its weekday.
Common uses
Find a deadline 30, 60, or 90 days from today, a date 100 days before an event, or the end of a trial period.
Example
30 days after 1 January 2025 is 31 January 2025.
Frequently asked questions
Does it handle leap years?
Yes. February 29 is counted automatically in leap years.
Can I subtract days?
Yes. Choose Subtract days to go backwards.