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

155,703 days

From Saturday, May 20, 1600 to Monday, September 7, 2026.

Monday–Friday weekdays111,216
Weeks and days22,243w 2d
Calendar span426 years, 3 months, 18 days

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