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.

The end date comes before the start date

116,398 days

From Tuesday, May 15, 2345 to Sunday, September 6, 2026.

Monday–Friday weekdays83,142
Weeks and days16,628w 2d
Calendar span318 years, 8 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.