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

168,030 days

From Saturday, August 20, 1566 to Monday, September 7, 2026.

Monday–Friday weekdays120,021
Weeks and days24,004w 2d
Calendar span460 years, 18 days

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