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

39,936 days

From Thursday, May 3, 1917 to Friday, September 4, 2026.

Monday–Friday weekdays28,526
Weeks and days5,705w 1d
Calendar span109 years, 4 months, 1 day

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