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

155,955 days

From Saturday, September 11, 1599 to Monday, September 7, 2026.

Monday–Friday weekdays111,396
Weeks and days22,279w 2d
Calendar span426 years, 11 months, 27 days

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