Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
144,172 days
From Monday, December 15, 1631 to Monday, September 7, 2026.
Monday–Friday weekdays102,980
Weeks and days20,596w 0d
Calendar span394 years, 8 months, 23 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.