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

142,501 days

From Saturday, July 12, 1636 to Monday, September 7, 2026.

Monday–Friday weekdays101,786
Weeks and days20,357w 2d
Calendar span390 years, 1 month, 26 days

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