Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
139,185 days
From Thursday, August 10, 1645 to Monday, September 7, 2026.
Monday–Friday weekdays99,417
Weeks and days19,883w 4d
Calendar span381 years, 28 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.