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

213,209 days

From Sunday, December 11, 1442 to Wednesday, September 9, 2026.

Monday–Friday weekdays152,293
Weeks and days30,458w 3d
Calendar span583 years, 8 months, 29 days

Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.