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

169,864 days

From Saturday, August 12, 1561 to Monday, September 7, 2026.

Monday–Friday weekdays121,331
Weeks and days24,266w 2d
Calendar span465 years, 26 days

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