Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
146,301 days
From Sunday, February 15, 1626 to Monday, September 7, 2026.
Monday–Friday weekdays104,501
Weeks and days20,900w 1d
Calendar span400 years, 6 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.