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

163,368 days

From Saturday, May 26, 1579 to Monday, September 7, 2026.

Monday–Friday weekdays116,691
Weeks and days23,338w 2d
Calendar span447 years, 3 months, 12 days

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