Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
172,148 days
From Thursday, May 12, 1555 to Monday, September 7, 2026.
Monday–Friday weekdays122,962
Weeks and days24,592w 4d
Calendar span471 years, 3 months, 26 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.