Business Day Calculator to Calculate
Working Days Between Dates

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The online business day calculator on this page will calculate working days between two dates or a date from a number of working days, and exclude holidays of your choosing.

This free online calculator will calculate the number business days between a starting and ending date, or calculate an ending date based on a specified number of business days to add or subtract to or from a starting date.

Plus, unlike other working days calculators, this calculator will even let you choose which days of the week you want to be counted as business days.

This means you can also use the calculator to count work days only, or any other types of events that are counted based on which days of the week they reoccur.

If you would like to calculate the years, days, weeks, hours, and minutes between dates, please visit the Date Difference Calculator.

Many Fun Uses!

Here are just a few of the many uses for this business days calculator:

  • How many working days before my vacation starts?
  • How many rounds of golf can I get in before my membership ends?
  • How many weekend shopping days left before Christmas?
  • How many school days left before spring break?
  • How many workdays until my retirement?
  • When is my self-paced course completion date?

With that, let's use the business day calculator to calculate the number working days between dates, or to calculate a date by adding or subtracting a number of working days.

Business Day Calculator
Calcy sign introducing Business Day Calculator


Instructions: Adjust the check marks in the check boxes to indicate which days you want to be counted as working/business days.

Next, select the starting date you would like the calculator to start counting from (the starting date is not included in the count, whereas the ending date is).

If you wish to calculate an ending date by adding or subtracting a number of business days to or from the staring date, click the radio button on the add/subtract line, select "+" or "-" from the drop down menu and enter the number of days, select the holidays you want to exclude from the count, then click the "Calculate Business Days/Date" button.

Or, if you wish to calculate the working or business days between two dates, click the radio button on the ending date line, select the month and day and enter the year of the date you want to stop the counting at, select the holidays you want to exclude from the count, and then click the "Calculate Business Days/Date" button (leave the number of days field blank).

Mouse over the blue question marks for a further explanation of each entry field. More in-depth explanations can be found in the glossary of terms located beneath the Business Day Calculator.

Update on October 10, 2013: If you have visited this calculator any time prior to the date of the update, please refresh/reload the page (F5 on most keyboards) to make sure you are using latest version of the calculator, not the old copy that may be stored (cached) in your web browser.

Help Business days: Mon Tue Wed Thu Fri Sat Sun
Help Starting date:
Help business days to/from start date:
Help Or ending date:
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Help Move weekend Federal Holidays to weekdays
Help Check Federal Only All None Custom
New Year's Day (January 1)
Birthday of Martin Luther King, Jr. (3rd Monday in January)
Washington's Birthday (3rd Monday in February)
Good Friday (Friday before Easter)
Easter (Western, based on moon cycle)
Memorial Day (Last Monday in May)
Independence Day (July 4)
Labor Day (1st Monday in September)
Columbus Day (2nd Monday in October)
Veterans Day (November 11)
Thanksgiving Day (4th Thursday in November)
Christmas Day (December 25)

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Help Ending date:

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Business Day Calculator Glossary of Terms

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Business days: Use these check boxes to indicate which days of the week you want the business day calculator to count as business/working days.

Business days: Use these checkboxes to indicate which days of the week you want the business day calculator to count as business or working days. Note that only holidays that fall on checked days will be excluded from the business day results.

Starting date: Select the month and day and enter the 4-digit year of the date you want the working days calculator to start counting at. Note that the starting year must be less than 4000.

Add or subtract business days to/from start date: If you want the business days calculator to calculate a date by adding or subtracting a number of business days to or from the starting date, click the radio button on this line, select + or - from the menu, and then enter the number of days to add or subtract.

Or ending date: If you want the calculator to calculate the number of business days between two dates, click the radio button on this line, then select the month and day and enter the 4-digit year of the date you want to stop counting at. Note that the ending year must be less than 4000, and the ending date must be later than the starting date.

Exclude Holidays [+] button: If you want the calculator to exclude certain holidays if they fall on a business day, click this button to open the list of holidays and then check all holidays that apply. You may also add up to two holidays of your own choosing. Please note that the holiday dates are calculated, so be sure to double check the results with a calendar to make sure they are the correct dates.

Move weekend Federal Holidays to weekdays: If you check this box, federal holidays that fall on a Saturday will be moved to Friday, and federal holidays that fall on a Sunday will be moved to Monday.

Autofill checks: Click the preferred radio button to automatically add or remove checkmarks to/from the list of holidays.

Business days between dates: This is the number of business days counted by the calculator.

Ending date: This is the date the calculator stopped counting at.

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