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

45,557 days

From Friday, December 13, 1901 to Saturday, September 5, 2026.

Monday–Friday weekdays32,540
Weeks and days6,508w 1d
Calendar span124 years, 8 months, 23 days

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