Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
142,644 days
From Wednesday, February 20, 1636 to Monday, September 7, 2026.
Monday–Friday weekdays101,888
Weeks and days20,377w 5d
Calendar span390 years, 6 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.