Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
145,991 days
From Tuesday, December 22, 1626 to Monday, September 7, 2026.
Monday–Friday weekdays104,279
Weeks and days20,855w 6d
Calendar span399 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.