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

151,752 days

From Tuesday, March 15, 1611 to Monday, September 7, 2026.

Monday–Friday weekdays108,394
Weeks and days21,678w 6d
Calendar span415 years, 5 months, 23 days

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