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

144,994 days

From Friday, September 14, 1629 to Monday, September 7, 2026.

Monday–Friday weekdays103,566
Weeks and days20,713w 3d
Calendar span396 years, 11 months, 24 days

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