Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
146,721 days
From Sunday, December 22, 1624 to Monday, September 7, 2026.
Monday–Friday weekdays104,801
Weeks and days20,960w 1d
Calendar span401 years, 8 months, 16 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.