Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
145,850 days
From Wednesday, May 12, 1627 to Monday, September 7, 2026.
Monday–Friday weekdays104,178
Weeks and days20,835w 5d
Calendar span399 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.