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

150,327 days

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

Monday–Friday weekdays107,376
Weeks and days21,475w 2d
Calendar span411 years, 7 months

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