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

77,027 days

From Monday, October 16, 1815 to Sunday, September 6, 2026.

Monday–Friday weekdays55,019
Weeks and days11,003w 6d
Calendar span210 years, 10 months, 21 days

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