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

150,258 days

From Friday, April 17, 1615 to Monday, September 7, 2026.

Monday–Friday weekdays107,326
Weeks and days21,465w 3d
Calendar span411 years, 4 months, 21 days

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