Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
141,092 days
From Monday, May 21, 1640 to Monday, September 7, 2026.
Monday–Friday weekdays100,780
Weeks and days20,156w 0d
Calendar span386 years, 3 months, 17 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.