Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
153,665 days
From Sunday, December 18, 1605 to Monday, September 7, 2026.
Monday–Friday weekdays109,761
Weeks and days21,952w 1d
Calendar span420 years, 8 months, 20 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.