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

257,617 days

From Thursday, May 15, 1321 to Sunday, September 13, 2026.

Monday–Friday weekdays184,011
Weeks and days36,802w 3d
Calendar span705 years, 3 months, 29 days

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