Days Between Dates Calculator

Enter your start and end dates to get an exact count. The calculator counts every calendar day between the two dates, accounting for different month lengths and leap years.

The calculator counts the days between the two dates, not including the start date but including the end date. So from January 1 to January 3, the result is 2 days.

Leap years are automatically accounted for. February has 29 days in leap years (divisible by 4, except centuries unless also divisible by 400), which adds one extra day to any span crossing a February 29th in a leap year.