The Business Date Calculator allows you to enter any date and add or subtract any number of working days or non-working days. It takes into account public holidays in 200+ countries and regions.

Getting Started with Your Calculation

  1. Enter the date you wish to use as a starting point for your calculation under Start Date.
  2. Under Add/Subtract, choose if you wish to add days to the date or if you wish to subtract them from it.
  3. Enter the number of days to add or subtract into the Days field.
  4. Make a selection in the drop-down menus under Days in Results to specify which types of days should be included or excluded. If Exclude is selected in the first menu, the calculator will take into account all days except the days specified in the second menu. If Include only is selected, it will take into account only the days specified in the second menu.
  5. Click on Change Country or Change State to specify the country and state whose holidays should be considered in the calculation.
  6. Then click Calculate New Date to get your result.

Additional Options

Repeat the calculation

Enable Repeat and enter a number into the field that appears to add or subtract the same number of days or other time units multiple times.

Example: To find out the dates 11, 22, 33, and 44 days from the start date, enter 11 into the Days field, tick the Repeat box, and enter 4 into the field.

Include the time

The Include the time link takes you to the Date and Time Calculator where you can execute the same type of calculation, but including the time of day and the option to add hours, minutes, and seconds. Please note that this calculator does not allow you to exclude or count holidays or weekend days.

Add or subtract months and years

The Add or subtract months and years link takes you to the Date Calculator, which allows you to add or subtract larger time units, like years, months, weeks, and days, to or from a date, without distinguishing between working days and non-working days.

Frequently Asked Questions (FAQ)

Why is this holiday not included?

If the calculator does not take into account a specific holiday, please first make sure that you have selected the correct country, constituent country, state, or territory under the Days in Results drop-down menus. Click on Change Country or Change State to select a different country or state.

The holiday may also be included in the calculation but not listed in the results because it falls on a Saturday or Sunday.

If you still think that a holiday is missing, please open the country's holiday page by clicking on its name on the holidays overview page. If the holiday is not listed in the table, please let us know.

Why are Easter Monday and the Summer Bank Holiday in the UK not included?

Some holidays in the United Kingdom, such as Easter Monday, are observed in some of its constituent countries only. The Summer Bank Holiday is observed on a different date in Scotland than in the other constituent countries. Both holidays are therefore categorized as “state holidays” in our system, and they are not taken into account unless you click on Change state and select one of the constituent countries where they are observed.

Is it possible to count only workdays?

Yes. In the drop-down menus under Days in Results, select Exclude and Weekends and public holidays.

Is it possible to count only non-working days?

Yes. In the drop-down menus under Days in Results, select Include only and Weekends and public holidays.

What does the option “No days” do?

By selecting Exclude and No days in the drop-down menus under Days in Results, the Business Date Calculator will not distinguish between workdays and non-working days. It will function like the Date Calculator.

The same is true if you select Include only and All days.

Why are the dates deleted when I select a country or state?

This is a known issue, which will be fixed. We apologize for the inconvenience.

Does the calculator include leap years?

Yes, all our calculators account for leap years.

Why are the date fields in the wrong order?

You can change the order of the Day, Month, and Year fields by selecting a different Short Date format in My Units.

Can I edit my calculation?

To edit your calculation, scroll up to the top of the page, make your changes, and calculate again. The Make adjustment and calculate again is a shortcut to the top of the page.

Why does the result show the wrong days of the week?

This is most likely not an error but due to the fact that the Julian calendar was still in use in the year you entered. This calendar system was eventually replaced by today's Gregorian calendar, but the date this change happened differed from one country to another.

The calculator uses the Julian-Gregorian switch date of the country you select in the settings under My Units.

How does your algorithm work? Can you help me program my own?

We are a small team with a very extensive website to manage, so unfortunately, we do not have the capacity to share detailed information about our algorithms or provide programming help.

What kinds of date calculators do you offer?

  1. Calculating the duration between 2 points in time:
  2. Adding or subtracting days:

Where can I find more information about the site and its services?

The General FAQ Page answers your questions about, our services, site-wide settings and customization options, as well as advertising and copyright policies.


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