Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
166,365 days
From Friday, March 12, 1571 to Monday, September 7, 2026.
Monday–Friday weekdays118,831
Weeks and days23,766w 3d
Calendar span455 years, 5 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.