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

14,872 days

From Sunday, December 15, 1985 to Thursday, September 3, 2026.

Monday–Friday weekdays10,624
Weeks and days2,124w 4d
Calendar span40 years, 8 months, 19 days

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