Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
148,162 days
From Monday, January 11, 1621 to Monday, September 7, 2026.
Monday–Friday weekdays105,830
Weeks and days21,166w 0d
Calendar span405 years, 7 months, 27 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.