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

13,778 days

From Tuesday, December 13, 1988 to Thursday, September 3, 2026.

Monday–Friday weekdays9,842
Weeks and days1,968w 2d
Calendar span37 years, 8 months, 21 days

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