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

182,896 days

From Tuesday, December 8, 1525 to Tuesday, September 8, 2026.

Monday–Friday weekdays130,640
Weeks and days26,128w 0d
Calendar span500 years, 9 months

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