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

18,731 days

From Wednesday, December 15, 2077 to Thursday, September 3, 2026.

Monday–Friday weekdays13,379
Weeks and days2,675w 6d
Calendar span51 years, 3 months, 12 days

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