Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
146,371 days
From Sunday, December 7, 1625 to Monday, September 7, 2026.
Monday–Friday weekdays104,551
Weeks and days20,910w 1d
Calendar span400 years, 9 months
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.