Tools · Calculators · Everyday life Last update: Nov 6, 2026

Business Days Calculator

Count the working days between two dates — Monday to Friday, with or without public holidays.

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Dates use your device’s calendar. Business days are Monday to Friday.

How business days are counted

Business days are the weekdays Monday to Friday. The calculator goes through every day from the start date up to the end date, leaves out Saturdays and Sundays and, if you tick the option, the public holidays of the country you choose.

business days = calendar days − weekend days − public holidays on weekdays

Public holidays included

  • United States: the 11 federal holidays, moved to Friday or Monday when they fall on a weekend.
  • UK (England and Wales): the 8 bank holidays, with substitute days.
  • Denmark and Poland: the national public holidays.

State, regional and one-off holidays (for example a royal event) are not included. If your company closes on other days, subtract them yourself.

Business days for deadlines

Deadlines such as “within 10 business days” are counted from the day after the start. To find the date itself, use the Add days to a date calculator and choose business days as the unit.

Frequently asked questions

How many business days are in a year?

About 260 (52 weeks × 5 days). Without US federal holidays it is about 250.

How many business days are in a month?

Between 20 and 23, depending on the month and the weekdays it starts on — before public holidays.

Is Saturday a business day?

Usually not. Banks, government offices and most companies count Monday to Friday as business days.