Business Days Calculator
Enter two dates to count the business days between them. Weekends are skipped, and you can also exclude US federal holidays or any dates you list.
Result
- Calendar days counted
- 31
- Weekend days skipped
- 9
- Holidays skipped
- 0
- From
- Thursday, January 15, 2026
- To
- Saturday, February 14, 2026
The start date is always counted. Holidays that fall on a weekend are not counted twice.
Formula
- Business days = calendar days − weekend days − holidays on working days
- Each full week contains 5 business days with a Saturday and Sunday weekend
How the Business Days Calculator works
A business day is a day that is neither a weekend day nor a public holiday. The calculator walks through every date in the range and counts those that qualify, so it is exact for any range and any weekend pattern.
US federal holidays are fixed by law. Holidays that fall on a Saturday are observed on the Friday before, and those on a Sunday are observed on the Monday after. Private employers and other countries follow different calendars, so use the custom list for those.
Worked example
From Thursday, January 15, 2026 to Saturday, February 14, 2026, counting both ends, there are 31 calendar days. Nine of them are weekend days, so there are 22 business days. Excluding Martin Luther King Jr. Day on January 19 leaves 21.
Frequently asked questions
How many business days are in a year?
A year has about 260 or 261 weekdays. After the 11 US federal holidays, most years have 249 to 251 working days.
Is Saturday a business day?
Not in the usual sense. Business days normally mean Monday to Friday. Some shipping and banking services treat Saturday differently, so check their terms.
How do I add business days to a date?
Use the date calculator and choose business days as the unit. It steps forward one working day at a time.
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Calculations run in your browser and nothing you enter is sent to a server. Results are provided for general information. Check critical figures independently before relying on them.