Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
186,539 days
From Saturday, December 18, 1515 to Tuesday, September 8, 2026.
Monday–Friday weekdays133,242
Weeks and days26,648w 3d
Calendar span510 years, 8 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.