About this tool
Count business days (Mon–Fri) between two dates inclusive. Excludes weekends.
Formula
Iterate from start to end inclusive; increment if day-of-week is not Sat (6) or Sun (0).
Worked example
2026-01-01 (Thu) through 2026-01-31 → 22 business days out of 31.
Notes
Public holidays are NOT subtracted — those vary by country and would require a holiday calendar.