Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
148,037 days
From Sunday, May 16, 1621 to Monday, September 7, 2026.
Monday–Friday weekdays105,741
Weeks and days21,148w 1d
Calendar span405 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.