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

146,989 days

From Friday, March 29, 1624 to Monday, September 7, 2026.

Monday–Friday weekdays104,991
Weeks and days20,998w 3d
Calendar span402 years, 5 months, 9 days

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