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

159,133 days

From Saturday, December 29, 1590 to Monday, September 7, 2026.

Monday–Friday weekdays113,666
Weeks and days22,733w 2d
Calendar span435 years, 8 months, 9 days

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