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.

The end date comes before the start date

89,575 days

From Tuesday, December 5, 2271 to Saturday, September 5, 2026.

Monday–Friday weekdays63,982

Weeks and days12,796w 3d

Calendar span245 years, 3 months

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