Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
186,179 days
From Tuesday, December 12, 1516 to Tuesday, September 8, 2026.
Monday–Friday weekdays132,985
Weeks and days26,597w 0d
Calendar span509 years, 8 months, 27 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.