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

189,010 days

From Saturday, March 13, 1509 to Tuesday, September 8, 2026.

Monday–Friday weekdays135,007
Weeks and days27,001w 3d
Calendar span517 years, 5 months, 26 days

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