Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
148,144 days
From Friday, January 29, 1621 to Monday, September 7, 2026.
Monday–Friday weekdays105,816
Weeks and days21,163w 3d
Calendar span405 years, 7 months, 9 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.