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Business Day Calculator

Working Days Calculator

Last reviewed: October 14, 2026

Count working days between two dates, add working days to a start date, or subtract them to find an earlier date. Here working days and business days mean the same thing: the days of the selected country's working week, minus its public holidays. The calculator counts that week as Monday to Friday for 21 of the 25 countries, as Sunday to Thursday for Egypt, Qatar, and Saudi Arabia, and as Sunday to Friday for Israel.

This calculator has holiday calendars for 25 countries: the US, the UK, Canada, Australia, Brazil, China, Egypt, France, Germany, India, Ireland, Israel, Italy, Japan, Mexico, New Zealand, the Philippines, Qatar, Saudi Arabia, Singapore, South Africa, Spain, Switzerland, the UAE, and Vietnam. Pick the country whose calendar governs the deadline. Each country's holiday set is the one its own page lists with its source. It is one list per country (for the UK, the bank holidays of England and Wales), so a holiday that your state or region adds may not be in it; the calculator's Advanced options let you add such days as custom dates.

For informational purposes only

This calculator provides general estimates based on business day counting rules. It does not constitute legal advice. Deadlines in legal, regulatory, or contractual matters may be subject to jurisdiction-specific rules, court orders, or statutory exceptions. Always verify critical deadlines with a qualified professional.

Frequently Asked Questions

What is the difference between working days and business days?
On this site, working days and business days mean the same thing: the days of the working week, excluding public holidays. Of the 25 countries this calculator supports, it counts Monday to Friday with a Saturday-Sunday weekend for 21: the US, the UK, Canada, Australia, Brazil, China, France, Germany, India, Ireland, Italy, Japan, Mexico, New Zealand, the Philippines, Singapore, South Africa, Spain, Switzerland, the UAE, and Vietnam. For Egypt, Qatar, and Saudi Arabia, it counts Sunday to Thursday and treats Friday and Saturday as the weekend, applied automatically when you pick one of them. The Saudi royal order, the Qatari Emiri decision and the Egyptian government circular that set those weekends are listed below these questions. For Israel, it counts Sunday to Friday and treats Saturday as the only weekend day: those are the operating days the Bank of Israel states for its ZAHAV payment system, whose closure list the Israeli calendar follows, and a Friday is a short business day there. Israeli government ministries on the five-day week work Sunday to Thursday, so the default is not their count; with Israel selected, the Working week setting offers Sunday to Thursday (government ministries) instead. Both documents are listed below. A contract or an employer can define business days differently, for example around a four-day week, so check the contract's own definition. Our guide to the working week around the world covers more countries.
How many working days are in a year?
2026 has 261 weekdays, Monday to Friday. Taking off the public holidays that fall on one of them, this calculator counts for 2026: US 250 (federal holidays), UK 253 (England and Wales bank holidays), Canada 251 (federal general holidays), Australia 254 (national public holidays only, without state and territory days). For another year or country, use the Between Dates tab from January 1 to December 31 and tick both "Include start date in count" and "Include end date in count"; without them the first and last days of the year are left out. The holiday source for each country is in our sources register.
How many working days in a month?
Before holidays, a five-day week gives every month 20 to 23 working days: exactly 20 in a 28-day February, 20 or 21 in a leap-year February, 20 to 22 in a 30-day month, and 21 to 23 in a 31-day month, depending on the weekday the month starts on. Public holidays then take days off, so a month with several holidays can fall below 20.
Does the calculator count the start date?
No. The count begins the day after the start date. For example, if you start on Monday, day 1 is Tuesday. In the Between Dates tab the end date is left out too, unless you tick "Include end date in count"; "Include start date in count" adds the start date. Tick them when the contract or rule you are applying counts those days.
Can I use this for payroll or HR calculations?
Yes, for the counting. It gives the number of working days in a pay period, a month or a quarter. Whether a prorated salary, a notice period or a pay rule counts working days or calendar days is set by the contract or the law that defines it, so check that before you count.