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

148,317 days

From Sunday, August 9, 1620 to Monday, September 7, 2026.

Monday–Friday weekdays105,941
Weeks and days21,188w 1d
Calendar span406 years, 29 days

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