Business Days Calculator
Working days between two dates, holidays excluded properly.
Work out Business Days. Working days between two dates, holidays excluded properly. Names the convention it used.
Optional. Dates as yyyy-mm-dd, comma separated. One falling on a weekend is not counted twice.
Working days
—
Enter two valid dates.
How the Business Days Calculator works
Enter two dates for the number of working days between them, with weekends removed and any public holidays you supply taken out as well. A holiday landing on a weekend is not subtracted twice, which is how this calculation usually comes out one day short.
Also known as: working days between two dates · weekdays between dates calculator · how many working days calculator · business days excluding holidays
Frequently asked questions
How do I calculate business days between two dates?
Count the total days, remove Saturdays and Sundays, then remove any public holidays that fall on a weekday. Holidays already on a weekend must not be removed again — they were excluded once already.
Does this include the start and end dates?
It counts the interval rather than both endpoints, so Monday to Friday is four working days. If you need the inclusive count — five — add one. Contracts differ on which they mean, so it is worth checking the wording.
Which days count as the weekend?
Saturday and Sunday here. That is not universal: much of the Middle East works Sunday to Thursday, and some countries have a single rest day. Check the convention before applying this to an agreement.
Why do I need to enter holidays myself?
Because public holidays vary by country, region and year, and a built-in list would silently go stale. An outdated holiday list is worse than none, since it produces a confident wrong answer.
Put this calculator on your own site
Free to use, on any site, commercial or not. Paste this where you want it to appear. It is a plain iframe, so it works in WordPress, Squarespace, Wix, Webflow, Ghost and anything else that accepts HTML.
<iframe src="https://www.thecalclibrary.com/embed/business-days-calculator" width="100%" height="640" style="border:1px solid #e2e8f0;border-radius:12px" loading="lazy" title="Business Days Calculator"></iframe>
<p style="font:13px/1.5 system-ui,sans-serif;margin:6px 0 0;color:#64748b">Powered by <a href="https://www.thecalclibrary.com/business-days-calculator" style="color:#64748b">Business Days Calculator</a> from The Calc Library</p>The only condition is that the credit line below the frame stays in place. That one line is what pays for the tool being free — it is how anyone else finds it.