Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
142,239 days
From Tuesday, March 31, 1637 to Monday, September 7, 2026.
Monday–Friday weekdays101,599
Weeks and days20,319w 6d
Calendar span389 years, 5 months, 7 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.