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

145,195 days

From Sunday, February 25, 1629 to Monday, September 7, 2026.

Monday–Friday weekdays103,711
Weeks and days20,742w 1d
Calendar span397 years, 6 months, 13 days

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