Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
162,813 days
From Monday, December 1, 1580 to Monday, September 7, 2026.
Monday–Friday weekdays116,295
Weeks and days23,259w 0d
Calendar span445 years, 9 months, 6 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.