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

39,699 days

From Wednesday, December 26, 1917 to Friday, September 4, 2026.

Monday–Friday weekdays28,357
Weeks and days5,671w 2d
Calendar span108 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.