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

155,969 days

From Saturday, August 28, 1599 to Monday, September 7, 2026.

Monday–Friday weekdays111,406
Weeks and days22,281w 2d
Calendar span427 years, 10 days

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