How many business days are between two dates?

A business day is a day that is not part of the weekend and not a public holiday. In most of the world that means Monday to Friday. In much of the Middle East the weekend is Friday and Saturday, and a few countries rest only on Friday or only on Sunday. Pick your weekend above.

When counting between two dates, both dates are included if they are working days. That is how “business days from the 1st to the 10th” is usually meant. When adding working days, the start date is not counted: 1 business day after Friday is Monday.

You can choose US federal holidays or bank holidays in England and Wales. Both follow the official rules, including the days a holiday is observed when it falls on a weekend. One-off holidays announced by a government, and state or regional holidays, are not included. Scotland and Northern Ireland have different bank holidays.

Choose “Add working days”, type 10 and leave the start date as today. With a Saturday–Sunday weekend and no holidays, 10 business days is always exactly two weeks later, on the same weekday.

It is a reliable calendar count, but courts and contracts often have their own rules: some exclude the first day, some move a deadline that lands on a holiday, and many count calendar days rather than business days. Check the rule that applies to you.