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

27,028 days

From Saturday, September 4, 2100 to Friday, September 4, 2026.

Monday–Friday weekdays19,305

Weeks and days3,861w 1d

Calendar span74 years

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