Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
145,635 days
From Monday, December 13, 1627 to Monday, September 7, 2026.
Monday–Friday weekdays104,025
Weeks and days20,805w 0d
Calendar span398 years, 8 months, 25 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.