Date Calculator

Calculate the difference between dates or add/subtract days, months, or years.

Calculator Type:

Start Date:

End Date:

Your calculation result will appear here

For date difference, select the start and end dates to calculate the period between them
For date addition/subtraction, choose a base date and specify the number of days, months, or years to add or subtract
Results include total days as well as breakdown by years, months, and days
Leap years and varying month lengths are automatically accounted for in calculations