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

18,005 days

From Wednesday, May 18, 1977 to Thursday, September 3, 2026.

Monday–Friday weekdays12,861
Weeks and days2,572w 1d
Calendar span49 years, 3 months, 16 days

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