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

162,914 days

From Friday, August 22, 1580 to Monday, September 7, 2026.

Monday–Friday weekdays116,366
Weeks and days23,273w 3d
Calendar span446 years, 16 days

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