Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
139,053 days
From Wednesday, December 20, 1645 to Monday, September 7, 2026.
Monday–Friday weekdays99,323
Weeks and days19,864w 5d
Calendar span380 years, 8 months, 18 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.