Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
140,153 days
From Tuesday, December 16, 1642 to Monday, September 7, 2026.
Monday–Friday weekdays100,109
Weeks and days20,021w 6d
Calendar span383 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.