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

186,753 days

From Tuesday, May 18, 1515 to Tuesday, September 8, 2026.

Monday–Friday weekdays133,395
Weeks and days26,679w 0d
Calendar span511 years, 3 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.