Date-to-date calculator

Days between dates

Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.

Excluding the start date

199,810 days

From Monday, August 18, 1479 to Wednesday, September 9, 2026.

Monday–Friday weekdays142,722
Weeks and days28,544w 2d
Calendar span547 years, 22 days

Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.