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

80,988 days

From Monday, December 10, 1804 to Saturday, September 5, 2026.

Monday–Friday weekdays57,849
Weeks and days11,569w 5d
Calendar span221 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.