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

129,806 days

From Wednesday, April 15, 1671 to Monday, September 7, 2026.

Monday–Friday weekdays92,718
Weeks and days18,543w 5d
Calendar span355 years, 4 months, 23 days

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