Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
138,696 days
From Wednesday, December 12, 1646 to Monday, September 7, 2026.
Monday–Friday weekdays99,068
Weeks and days19,813w 5d
Calendar span379 years, 8 months, 26 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.