Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
147,833 days
From Monday, December 6, 1621 to Monday, September 7, 2026.
Monday–Friday weekdays105,595
Weeks and days21,119w 0d
Calendar span404 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.