Date-to-date calculator

Days between dates

Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.

Excluding the start date

168,130 days

From Thursday, May 12, 1566 to Monday, September 7, 2026.

Monday–Friday weekdays120,092
Weeks and days24,018w 4d
Calendar span460 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.