Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
148,161 days
From Tuesday, January 12, 1621 to Monday, September 7, 2026.
Monday–Friday weekdays105,829
Weeks and days21,165w 6d
Calendar span405 years, 7 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.