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

155,346 days

From Saturday, May 12, 1601 to Monday, September 7, 2026.

Monday–Friday weekdays110,961
Weeks and days22,192w 2d
Calendar span425 years, 3 months, 26 days

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