Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
155,489 days
From Wednesday, December 20, 1600 to Monday, September 7, 2026.
Monday–Friday weekdays111,063
Weeks and days22,212w 5d
Calendar span425 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.