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

28,836 days

From Monday, August 17, 2105 to Friday, September 4, 2026.

Monday–Friday weekdays20,596
Weeks and days4,119w 3d
Calendar span78 years, 11 months, 13 days

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