Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
144,536 days
From Monday, December 16, 1630 to Monday, September 7, 2026.
Monday–Friday weekdays103,240
Weeks and days20,648w 0d
Calendar span395 years, 8 months, 22 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.