Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
145,632 days
From Thursday, December 16, 1627 to Monday, September 7, 2026.
Monday–Friday weekdays104,022
Weeks and days20,804w 4d
Calendar span398 years, 8 months, 22 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.