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

259,901 days

From Tuesday, February 12, 1315 to Sunday, September 13, 2026.

Monday–Friday weekdays185,643
Weeks and days37,128w 5d
Calendar span711 years, 7 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.