Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
139,643 days
From Monday, May 9, 1644 to Monday, September 7, 2026.
Monday–Friday weekdays99,745
Weeks and days19,949w 0d
Calendar span382 years, 3 months, 29 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.