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

255,699 days

From Thursday, August 15, 1326 to Sunday, September 13, 2026.

Monday–Friday weekdays182,641
Weeks and days36,528w 3d
Calendar span700 years, 29 days

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