Counting weekdays for planning
Business days calculations are essential for shipping estimates, payment terms, and project scheduling. This tool excludes Saturdays and Sundays automatically.
Business Days Calculator
Pick a start and end date to count the business days (Monday through Friday) between them.
How it works
- 1
Enter the numeric values and units the form asks for.
- 2
Adjust modes or toggles if present.
- 3
Read the calculated result below — it updates when inputs change.
Why use this tool
- Runs entirely in your browser — nothing is uploaded to a server.
- 100% free, no sign-up, no limits.
- Works in any modern browser — no app install, no extension, no account.
How to use Business Days Calculator
Fill the fields in Business Days Calculator. Results recalculate from your inputs locally — treat them as estimates when the domain involves money, health, or labor rules.
Tips for better results
Double-check units (kg vs lb, months vs years). Educational tools are not professional advice.
Privacy and offline-friendly processing
Whenever possible, Business Days Calculator processes your data locally with JavaScript in this page. That means drafts, secrets, and unfinished work stay on your device by default. Prefer this workflow when you do not want to upload sensitive text, tokens, passwords, or files to a third-party service.
Frequently asked questions
Does it exclude public holidays?
No, only Saturdays and Sundays are excluded — public holidays vary by country and are not factored in.
Are the start and end dates both counted?
Yes, if they fall on a weekday, both the start and end date are included in the count.
Is my data uploaded when I use this tool?
For most FlyUtils tools, no. Processing happens in your browser with JavaScript. If a tool ever needs a server, that will be stated clearly on the page.
Is Business Days Calculator free to use?
Yes. Business Days Calculator is free, with no sign-up and no artificial usage caps for normal personal and work use.
Does Business Days Calculator work on mobile?
Yes. The page is mobile-first, so you can paste input, tweak options, and copy results from a phone or tablet.