Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
154,001 days
From Sunday, January 16, 1605 to Monday, September 7, 2026.
Monday–Friday weekdays110,001
Weeks and days22,000w 1d
Calendar span421 years, 7 months, 22 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.