Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
140,455 days
From Monday, February 17, 1642 to Monday, September 7, 2026.
Monday–Friday weekdays100,325
Weeks and days20,065w 0d
Calendar span384 years, 6 months, 21 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.