Business Days Calculator
Count business days between two dates or add and subtract working days from any date. Optionally exclude US federal holidays. Free, instant, and completely private.
Excluded Holidays in Range
Holidays Skipped
Why Use This Tool
Count Business Days Between Dates
Enter any two dates and instantly see the number of business days (Monday through Friday) between them. The calculator also shows total calendar days, weekend days skipped, and weeks spanned, giving you a complete picture of the time period for planning, payroll, or legal deadlines.
Add or Subtract Working Days
Need to find a deadline that is a certain number of business days away? Enter a start date and the number of working days to add or subtract. The calculator automatically skips weekends and, when enabled, US federal holidays to land on the correct target date every time.
US Federal Holiday Exclusion
Toggle the holiday exclusion option to automatically remove all ten US federal holidays from the count. The calculator handles observed holidays correctly, shifting Saturday holidays to Friday and Sunday holidays to Monday, just as government offices and banks do in practice.
Instant Results with Zero Setup
No accounts, no downloads, no server-side processing. The entire calculation runs in your browser using JavaScript. Results appear the moment you click Calculate, and your data never leaves your device. Use it on desktop, tablet, or phone with any modern browser.
How to Use the Business Days Calculator
- Choose your mode — Select "Count Business Days" to find the number of working days between two dates, or "Add / Subtract Business Days" to determine a target date a certain number of business days away from a starting point.
- Enter your dates — In count mode, pick a start date and an end date. In add/subtract mode, pick a start date, enter the number of business days, and select whether to move forward or backward in time.
- Toggle holiday exclusion — If you want to exclude US federal holidays from the calculation, enable the toggle. The calculator will skip New Year's Day, MLK Day, Presidents' Day, Memorial Day, Juneteenth, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving, and Christmas Day.
- View your results — Click Calculate to see the business days count, total calendar days, weekend days skipped, and any holidays excluded. In add/subtract mode, you will see the exact target date and day of the week.
When calculating business days across countries, holiday calendars differ significantly. Chinese New Year, Diwali, and Eid can cause multi-day gaps that standard Western holiday calendars miss. For international contracts, always specify which country's business calendar applies.
Assuming all business days are equal. Many industries have half-day schedules on certain dates (Christmas Eve, New Year's Eve) that are technically business days but have reduced working hours. SLA calculations should account for these partial days.
Understanding Business Days and Working Day Calculations
Business days, also referred to as working days or workdays, represent the standard days of commercial activity in a given country or region. In the United States, Canada, the United Kingdom, Australia, and most of Europe, business days span Monday through Friday, excluding weekends and officially recognized public holidays. Financial institutions, government agencies, shipping carriers, and legal systems all rely on business day counting to set deadlines, estimate delivery windows, and calculate interest accrual periods.
The distinction between calendar days and business days is critical in many professional contexts. A contract that allows "five business days" for review gives the parties a full working week, while "five calendar days" could include a weekend and result in far less actual working time. Shipping companies often quote delivery times in business days, meaning a package sent on Thursday with a two-business-day delivery estimate would arrive on the following Monday, not Saturday. Courts set filing deadlines in business days, and failure to meet them can have serious legal consequences. Payroll departments calculate pay periods using business days, and project managers use working day counts to build realistic timelines for milestones and deliverables.
Internationally, the concept of a business day varies considerably. Most nations in the Americas, Europe, East Asia, and Oceania follow the Monday-through-Friday pattern, but several countries in the Middle East and North Africa operate on a Sunday-through-Thursday schedule, with Friday and Saturday serving as the weekend. Some nations observe a half-day Friday or a six-day work week. Public holidays add another layer of complexity. A day that is a regular working day in the United States might be a national holiday in Japan or India. Global businesses often maintain holiday calendars for every country in which they operate, and service-level agreements for multinational clients must specify which country's holiday schedule governs the calculation.
In project management, accurate business day counting directly affects scheduling, resource allocation, and stakeholder communication. When a project plan says a deliverable is due in 20 business days, the actual calendar duration depends on intervening weekends and holidays. A 20-business-day window starting on a Monday in early November in the US, for example, will extend well past four calendar weeks because Thanksgiving and the day after (often observed as a company holiday) fall within that period. Project managers who fail to account for these non-working days risk setting unrealistic deadlines and eroding team morale. This calculator simplifies that task by letting you toggle US federal holidays on or off, instantly showing the impact on your timeline.
Service-level agreements in the technology and customer service industries are almost universally defined in business days or business hours. A standard SLA might promise initial response within one business day and resolution within five business days. Support teams and operations managers use business day calculators to verify compliance, forecast workloads, and identify potential breaches before they occur. Understanding how to count business days accurately is a fundamental skill for anyone involved in vendor management, procurement, or customer success, and this tool makes it effortless.
Real-World Use Cases
Legal Team Calculating Filing Deadlines
A paralegal needs to determine a 30-business-day response deadline for a court filing. Calendar days would give the wrong date because weekends and federal holidays are excluded. Missing the deadline by even one day can result in case dismissal.
Supply Chain Manager Estimating Delivery Dates
A logistics coordinator calculates shipping transit times in business days to set accurate customer expectations. A 5-business-day shipment placed on Thursday arrives the following Thursday, not Tuesday, because the weekend does not count.
HR Specialist Processing Payroll Periods
A payroll administrator counts business days in each pay period to calculate hourly employee compensation. Months with holidays have fewer billable days, affecting both employee pay and project budget forecasts.
Frequently Asked Questions
What counts as a business day?
A business day is any weekday from Monday through Friday that is not a recognized public holiday. In the United States and most Western countries, Saturday and Sunday are considered non-business days. When you enable the US federal holidays option in this calculator, ten nationally recognized holidays are also excluded. These include New Year's Day, Martin Luther King Jr. Day, Presidents' Day, Memorial Day, Juneteenth, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving, and Christmas Day. Banks, courts, government offices, and most corporate businesses follow this convention when counting deadlines, processing times, and delivery windows.
Which US federal holidays does the calculator exclude?
When the holiday exclusion toggle is enabled, the calculator skips the following ten US federal holidays: New Year's Day (January 1), Martin Luther King Jr. Day (third Monday of January), Presidents' Day (third Monday of February), Memorial Day (last Monday of May), Juneteenth National Independence Day (June 19), Independence Day (July 4), Labor Day (first Monday of September), Columbus Day (second Monday of October), Veterans Day (November 11), Thanksgiving Day (fourth Thursday of November), and Christmas Day (December 25). For holidays that fall on a Saturday, the preceding Friday is used as the observed date. For holidays that fall on a Sunday, the following Monday is used. This matches how federal offices and most financial institutions handle weekend holidays.
How do business days differ across countries?
Business day conventions vary around the world. Most countries in North America, South America, Europe, and East Asia treat Monday through Friday as working days. However, several Middle Eastern nations use Sunday through Thursday, with Friday and Saturday as the weekend. Some countries observe a half-day on Friday or Saturday. Public holidays differ drastically by country, and even within a country, regional holidays can apply in certain states or provinces but not others. If you are calculating business days for an international context, this calculator provides the Monday-through-Friday baseline. You may need to manually adjust for region-specific holidays that are not included in the US federal holiday list.
How are business days used in SLA calculations?
Service-level agreements in technology, logistics, and customer service industries frequently specify response and resolution times in business days. For instance, a vendor might commit to resolving a support ticket within three business days of receiving it. This means weekends and public holidays do not count toward the deadline. If a ticket is filed on Friday afternoon, the three-business-day clock does not start until Monday. This calculator allows you to add a specific number of business days to any start date to determine the exact SLA deadline. Enabling the holiday exclusion option ensures that federal holidays do not eat into the available working time, giving you an accurate compliance date.
Can I add or subtract business days from a specific date?
Yes. Switch to the "Add / Subtract Business Days" tab, enter your starting date, type the number of business days, and select whether you want to move forward (add) or backward (subtract). The calculator automatically skips Saturdays and Sundays, and if you enable the holiday toggle, it also skips US federal holidays. The result shows the exact target date and the day of the week it falls on. This feature is invaluable for determining shipment arrival dates, payment due dates, legal filing deadlines, and project milestones that are expressed in business days rather than calendar days.
Does the calculator count the start date or end date?
In count mode, the calculator counts from the day after the start date through and including the end date. This is the standard convention used by banks, courts, and shipping companies. For example, if you set Monday as the start date and Friday of the same week as the end date, the calculator returns four business days (Tuesday, Wednesday, Thursday, and Friday). In add/subtract mode, the starting date is not counted as one of the business days. If you add one business day to a Monday, the result is Tuesday. This behavior matches common expectations for deadlines like "payment due within 5 business days of invoice date."
Is my data private when using this calculator?
Absolutely. The Business Days Calculator runs entirely in your web browser using client-side JavaScript. No dates, inputs, or results are transmitted to any server or third-party service. There are no accounts to create, no cookies storing your data, and no analytics capturing the specific dates you enter. You can verify this by checking your browser's developer tools for network activity while using the tool. All Toolrip utilities follow this privacy-first approach, ensuring your information never leaves your device.
Public Holidays by Country
The number of public holidays varies dramatically from country to country, directly affecting how many business days are available in a given year. When planning international projects, deliveries, or legal deadlines, these differences can add up to weeks of unexpected downtime.
| Country | National Public Holidays | Notable Holidays | Notes |
|---|---|---|---|
| United States | 11 | Independence Day, Thanksgiving, Christmas | Federal holidays only. Individual states may add more. No national paid leave mandate. |
| United Kingdom | 8 | Bank Holidays, Christmas, Easter Monday | England and Wales have 8. Scotland has 9 and Northern Ireland has 10. |
| Germany | 9-13 | German Unity Day, Christmas, Easter | 9 national holidays, but each of the 16 states adds its own. Bavaria has 13 total. |
| Japan | 16 | Golden Week, Obon, New Year (3 days) | One of the highest counts globally. Golden Week (late April to early May) shuts down most businesses for a full week. |
| India | 3 + regional | Republic Day, Independence Day, Diwali | Only 3 mandatory national holidays. Each state declares 15-20 additional holidays based on regional and religious observances. |
| Brazil | 12 | Carnival, Independence Day, Christmas | Carnival is not an official holiday but most businesses close for 4-5 days. Municipal holidays add more days off. |
| China | 7 (11 days) | Chinese New Year, National Day, Mid-Autumn | 7 holidays totaling 11 days off. Workers make up some days on adjacent weekends, creating 7-day "Golden Weeks." |
| Australia | 8 + state | Australia Day, ANZAC Day, Christmas | 8 national holidays. Each state and territory adds 1-3 more, including Melbourne Cup Day in Victoria. |
When calculating business days across borders, remember that holidays in your country do not apply to your international partners and vice versa. A delivery promise of "10 business days" can mean very different calendar spans depending on which country's holiday schedule applies. For critical cross-border deadlines, always confirm the specific holiday calendar being used and account for regional variations within countries that delegate holiday decisions to states or provinces.