Date-to-date calculator

Days between dates

Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.

Excluding the start date

90,849 days

From Thursday, December 11, 1777 to Sunday, September 6, 2026.

Monday–Friday weekdays64,891
Weeks and days12,978w 3d
Calendar span248 years, 8 months, 26 days

Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.