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

181,793 days

From Saturday, December 15, 1528 to Tuesday, September 8, 2026.

Monday–Friday weekdays129,852
Weeks and days25,970w 3d
Calendar span497 years, 8 months, 24 days

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