Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
149,659 days
From Tuesday, December 6, 1616 to Monday, September 7, 2026.
Monday–Friday weekdays106,899
Weeks and days21,379w 6d
Calendar span409 years, 9 months, 1 day
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.