Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
146,712 days
From Tuesday, December 31, 1624 to Monday, September 7, 2026.
Monday–Friday weekdays104,794
Weeks and days20,958w 6d
Calendar span401 years, 8 months, 7 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.