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

150,359 days

From Tuesday, January 6, 1615 to Monday, September 7, 2026.

Monday–Friday weekdays107,399
Weeks and days21,479w 6d
Calendar span411 years, 8 months, 1 day

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