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.

The end date comes before the start date

36,549 days

From Sunday, September 29, 2126 to Friday, September 4, 2026.

Monday–Friday weekdays26,105
Weeks and days5,221w 2d
Calendar span100 years, 25 days

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