Business Days Calculator.
There are 22 business days between 1 December and 31 December 2026 with a Saturday-Sunday weekend, or 20 if you also exclude 25 and 28 December as holidays. Count working days between two dates or add and subtract business days from a date, with your own weekend pattern and holidays.
Public holidays differ by country, state and year, so the tool skips only the dates you list. Counting between two dates excludes the start date unless you tick the box, and includes the end date. Nothing is sent to a server.
Business Days Calculator is a free online tool from Neweb (neweb.ai) for small businesses, with no sign-up. There are 22 business days between 1 December and 31 December 2026 with a Saturday-Sunday weekend, or 20 if you also exclude 25 and 28 December as holidays. Count working days between two dates or add and subtract business days from a date, with your own weekend pattern and holidays.
| Cost | Free, no account, no watermark |
|---|---|
| Built for | small businesses, freelancers and sole proprietors |
| Made by | Neweb, the AI website builder and online presence manager (free plan; paid plans from $9/month billed yearly) |
Facts checked October 2026.
What you'll get.
A real example of what this tool produces. Run it above with your own inputs.
Business days, also called working days, are the days a business is normally open: Monday to Friday in most of the world, Sunday to Thursday where the weekend is Friday and Saturday. Payment terms, delivery promises, notice periods, refund windows and project deadlines are often written in business days, and counting them on a calendar is slow and easy to get wrong across weekends and holidays.
This calculator does two jobs. It counts the business days between two dates, and it adds or subtracts a number of business days from a date to give a deadline. Choose your weekend pattern, then paste in any public holidays or closure days you want skipped. The result shows the weekend days and holidays it skipped, so you can check the working.
The tool is free and runs in your browser. It comes from Neweb, the AI website builder for small businesses (free plan, paid plans from $9/month billed yearly, $19 month-to-month). If you promise "delivery in 5 business days" on your website, this is how to check what that means for an order placed today.
How to use the business days calculator
Choose whether to count business days between two dates, or add or subtract business days from a date.
Pick your weekend pattern: Saturday and Sunday, Friday and Saturday, Sunday only, Friday only, or none.
Enter the start date and either the end date or the number of business days.
Paste any holidays to skip, one per line as YYYY-MM-DD. Use your own country’s or state’s public holiday list.
Click Calculate. The panel shows the result plus the weekend days and holidays it skipped.
Why this matters for your business
Deadlines are often written in business days. Payment terms, delivery estimates, cooling-off periods and notice periods frequently use working days, and misreading them can mean a late payment or a missed deadline.
Customers judge you on delivery promises. "Ships in 3 business days" placed on a Thursday before a holiday weekend means the following Wednesday or later. Getting that right on your website avoids complaints.
Planning needs real capacity. A month with two public holidays has about 10 percent fewer working days, which matters for staffing, project quotes and monthly targets.
Tips for better results
- Check whether a contract counts the first day. Most count from the day after the trigger date, which is the calculator’s default.
- Public holidays differ by country and often by state or province; copy the official list for your location into the holiday box.
- When a holiday falls on a weekend, many countries give a substitute weekday off; add that weekday too.
- Several Middle Eastern countries use a Friday-Saturday weekend, while the UAE moved to Saturday-Sunday in 2022; pick the pattern that matches your business.
- Put realistic delivery windows on your product pages and update them before holiday seasons.
- Pair with the invoice generator to set due dates on invoices.
Example
A real-world walkthrough
An online print shop in Sydney promises dispatch within 10 business days. An order comes in on Monday 9 November 2026. Adding 10 business days with a Saturday-Sunday weekend gives Monday 23 November 2026, skipping two weekends.
For December planning, the owner counts the business days from 1 to 31 December 2026 and adds 25 December (Christmas Day) and 28 December (the substitute Boxing Day holiday in New South Wales) as holidays: 20 business days instead of 22. She uses the figure to set the last order date before Christmas on the website.
Frequently asked questions
How do I calculate business days between two dates?
Count the days from the day after the start date up to and including the end date, then remove weekend days and public holidays. For 1 to 31 December 2026 with a Saturday-Sunday weekend, that is 30 calendar days, minus 8 weekend days, which leaves 22 business days; removing 25 and 28 December as holidays leaves 20. The calculator does the counting and lets you include the start date if your rule requires it.
Are business days the same as working days?
In everyday use, yes. Both mean the days a business normally operates, usually Monday to Friday excluding public holidays. Some industries define them differently: banks use "banking days" tied to payment system calendars, and shipping companies may treat Saturday as a delivery day. When a contract matters, check its definition.
Does the calculator know public holidays?
No. Public holidays vary by country, state, province and year, and some are announced at short notice, so the tool skips only the dates you enter. Copy the official list from your government or a reliable calendar for your location and paste the dates, one per line, as YYYY-MM-DD. Add any days your business closes, such as a December shutdown.
How many business days are in a year?
With a Saturday-Sunday weekend, a year has 260 or 261 weekdays (262 in rare cases), depending on which day it starts and whether it is a leap year. Subtract your public holidays, typically somewhere between 8 and 15 depending on the country, to get the working days. Use the count mode from 1 January to 31 December with your holidays entered for an exact figure.
What does "5 to 7 business days" delivery mean?
It means the parcel should arrive between the fifth and seventh working day after dispatch, not counting weekends or holidays. An order dispatched on a Friday with a 5 to 7 business day estimate would usually arrive between the following Friday and the Tuesday after. Add the dispatch time too, since many shops quote dispatch and delivery separately.
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