Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
34,800 days
From Monday, December 15, 2121 to Friday, September 4, 2026.
Monday–Friday weekdays24,856
Weeks and days4,971w 3d
Calendar span95 years, 3 months, 11 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.