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

40,434 days

From Wednesday, December 22, 1915 to Friday, September 4, 2026.

Monday–Friday weekdays28,882
Weeks and days5,776w 2d
Calendar span110 years, 8 months, 13 days

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