Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
161,765 days
From Saturday, October 15, 1583 to Monday, September 7, 2026.
Monday–Friday weekdays115,546
Weeks and days23,109w 2d
Calendar span442 years, 10 months, 23 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.