Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
147,824 days
From Wednesday, December 15, 1621 to Monday, September 7, 2026.
Monday–Friday weekdays105,588
Weeks and days21,117w 5d
Calendar span404 years, 8 months, 23 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.