Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
171,990 days
From Monday, October 17, 1555 to Monday, September 7, 2026.
Monday–Friday weekdays122,850
Weeks and days24,570w 0d
Calendar span470 years, 10 months, 21 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.