What counts as a business day?

A business day is any weekday (Monday through Friday) that does not fall on a recognized public holiday. Saturdays and Sundays are always excluded.

Which holidays are included for each country?

US federal holidays, England and Wales bank holidays, Canadian federal statutory holidays and the Australian holidays shared by every state and territory. Dates are worked out from the official rules for any year, including Easter and weekend substitute days. State, provincial and Scottish holidays are not included, so add those as custom dates.

Can I exclude custom holidays not on the standard list?

Yes. Enter any additional dates you want to exclude in the "Custom holidays to exclude" field, one date per line in YYYY-MM-DD format.

Does the calculator include the start and end dates in the count?

The count includes the start date but excludes the end date, which is the standard convention used in financial and legal calculations. For example, counting from Monday to Wednesday gives 2 business days (Monday and Tuesday).

How many business days are in 2026 and 2027?

2026 has 261 weekdays. Taking out public holidays leaves 250 business days in the US (11 federal holidays), 253 in the UK (England and Wales bank holidays), 251 in Canada (federal holidays) and 255 in Australia (national holidays only). 2027 also has 261 weekdays: 249 business days in the US, 253 in the UK, 251 in Canada and 255 in Australia.

Why does Excel NETWORKDAYS give one more day?

NETWORKDAYS counts both the start and the end date. This calculator counts the start date but not the end date, so when the end date is a working day Excel returns one more. Add one day to the end date here to match Excel.

Business Days Calculator

Count business days between two dates or calculate a future/past date by adding or subtracting business days, with support for US, UK, Canadian, and Australian public holidays.

Business days are Monday to Friday, minus public holidays.

Settings

Calculation mode

Count days between two dates Add days to a date

Start date *

End date *

Country holidays

Custom holidays to exclude (one date per line, YYYY-MM-DD)

Results

Enter your dates and click Calculate.

Quick answer

Business days are Monday to Friday, minus public holidays. The calculator counts from the start date up to, but not including, the end date. October 1 to October 31, 2026 has 22 weekdays, and in the US Columbus Day (October 12) brings it to 21 business days.

Examples

Example, 2026	US	UK
Oct 1 to Oct 31	21 days	22 days
Nov 2 to Dec 1	19 days	21 days
10 business days after Nov 16	Tue, Dec 1	Mon, Nov 30
Whole year 2026	250 days	253 days

Pick your dates and country to count or add business days.

Summary

Count business days between two dates or calculate a future/past date by adding or subtracting business days, with support for US, UK, Canadian, and Australian public holidays.

How it works

Select a calculation mode: "Count days between two dates" or "Add days to a date".
Enter the start date (and end date or number of business days to add).
Choose a country for holiday exclusions, or select "None" for no holidays.
Optionally enter custom holiday dates to exclude from the count.
Click "Calculate" to see the results instantly.

Use cases

Project managers calculating delivery deadlines that skip weekends and holidays.
Accountants determining payment due dates based on net-30 or net-60 business day terms.
HR teams computing notice periods or onboarding timelines.

Frequently Asked Questions

Last updated: 2026-05-28 · Reviewed by Nham Vu