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

162,542 days

From Saturday, August 29, 1581 to Monday, September 7, 2026.

Monday–Friday weekdays116,101
Weeks and days23,220w 2d
Calendar span445 years, 9 days

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