Business Days Calculator — Complete Guide
When someone says 'you will receive it in 5 business days,' that sounds simple — but calculating the actual calendar date requires knowing which days are weekends and potentially which are public holidays. This tool counts only weekdays (Monday through Friday) and gives you the exact date the period ends.
What you can do with Business Days Calculator
- Calculating when a delivery or service will complete after a stated number of business days
- Working out notice periods and contract deadlines
- Calculating SLA (service level agreement) due dates
- Project planning with working days rather than calendar days
- Determining invoice payment due dates
How to use Business Days Calculator
Enter the start date
Enter the number of business days to count forward (or backward)
The end date is calculated excluding weekends
Tips for best results
Public holidays are not automatically excluded — adjust manually if your deadline excludes specific holidays
Some international contracts specify 'working days' according to specific country calendars
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Frequently asked questions
Does this account for public holidays?
Most basic business day calculators count Monday-Friday only and do not know about public holidays. If your calculation must exclude specific holidays, add or subtract those days manually from the result.
What if I need to count backward to find a start date?
Enter a negative number of days, or swap the start and end date logic. Most tools support counting both forward and backward.