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

126,849 days

From Saturday, May 20, 1679 to Monday, September 7, 2026.

Monday–Friday weekdays90,606
Weeks and days18,121w 2d
Calendar span347 years, 3 months, 18 days

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