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

91,104 days

From Monday, March 31, 1777 to Sunday, September 6, 2026.

Monday–Friday weekdays65,074
Weeks and days13,014w 6d
Calendar span249 years, 5 months, 6 days

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