Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
138,701 days
From Friday, December 7, 1646 to Monday, September 7, 2026.
Monday–Friday weekdays99,071
Weeks and days19,814w 3d
Calendar span379 years, 9 months
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.