Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
149,502 days
From Friday, May 12, 1617 to Monday, September 7, 2026.
Monday–Friday weekdays106,786
Weeks and days21,357w 3d
Calendar span409 years, 3 months, 26 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.