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

186,480 days

From Tuesday, February 15, 1516 to Tuesday, September 8, 2026.

Monday–Friday weekdays133,200
Weeks and days26,640w 0d
Calendar span510 years, 6 months, 24 days

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