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

150,311 days

From Monday, February 23, 1615 to Monday, September 7, 2026.

Monday–Friday weekdays107,365
Weeks and days21,473w 0d
Calendar span411 years, 6 months, 15 days

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