Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
261 days
From Tuesday, December 16, 2025 to Thursday, September 3, 2026.
Monday–Friday weekdays187
Weeks and days37w 2d
Calendar span8 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.