Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
145,626 days
From Wednesday, December 22, 1627 to Monday, September 7, 2026.
Monday–Friday weekdays104,018
Weeks and days20,803w 5d
Calendar span398 years, 8 months, 16 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.