Business Days Calculator
Calculate exact working business days (Monday through Friday) for SLAs, project timelines, and invoices.
Calculation Inputs & Parameters
2026-09-01
2026-09-30
1
(Default)
Net Working Days (excl. weekends & holidays)
21 business days
Gross Workdays (Mon-Fri)
22 days
Total Calendar Days
30 days
Weekend Days
8 days
How the Calculation Works
Iterates through calendar dates and skips Saturday and Sunday.
Formula: Net Business Days = Mon-Fri Days - Public Holidays
Practical Worked Example
Given Inputs: Sep 1 to Sep 30, 2026
Calculated Output: 22 business days
- Filter weekdays and subtract custom public holidays.
Pro Tip: Define your company's holiday calendar explicitly, as public holidays vary by location and industry.