Overview
Business days matter for contracts, payroll and official deadlines. Enter the start and end dates, choose the weekly weekend, and add official holidays to get the actual working-day count.
Formula
Count every day in the range, excluding weekly weekend days and official holidays. The end date is excluded unless you choose to include it.
How it works
Set the two dates
The start and end dates.
Choose the weekend
Friday–Saturday, Saturday–Sunday or another preset.
Add official holidays
Optional dates deducted from business days.
Worked examples
A two-week project
From January 1 to 15 with a Friday–Saturday weekend: only working days are counted.
An official holiday
Add January 1 as a holiday so it is deducted unless it already falls on a weekend.
Frequently asked questions
Are official holidays deducted automatically?
No, you must enter their dates. This gives you full control over which holidays apply.
Is the start date counted?
Yes, counting begins on the start date. The end date is optional.
What if a holiday falls on a weekend?
It is counted once as a weekend day and is not deducted twice.
This calculator is for educational and informational purposes only and is not a substitute for professional advice.