Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
17,646 days
From Friday, May 12, 1978 to Thursday, September 3, 2026.
Monday–Friday weekdays12,604
Weeks and days2,520w 6d
Calendar span48 years, 3 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.