Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
145,475 days
From Sunday, May 21, 1628 to Monday, September 7, 2026.
Monday–Friday weekdays103,911
Weeks and days20,782w 1d
Calendar span398 years, 3 months, 17 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.