US Working Days Calculator

Use this US working days calculator to calculate business days between two dates, add or subtract working days, and account for weekends and US federal holidays. Whether you’re planning a project deadline, calculating a notice period, checking a delivery schedule, or figuring out how many workdays remain, HakanTools makes working-day calculations quick and simple.

Choose from three calculation options: count working days between dates, add working days to a date, or subtract working days from a date. You can also exclude US federal holidays or add your own custom holidays.

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US Working Days Calculator

Count workdays, add business days, or subtract business days while excluding weekends and US federal holidays.

Calculations happen in your browser. No dates or personal information are sent to a server.

How to Use the US Working Days Calculator

The US working days calculator is designed to make business-day calculations easier without manually checking a calendar.

1. Choose your calculation

Select the type of calculation you need:

  • Count Working Days — Find the number of working days between two dates.
  • Add Working Days — Find the date that falls a specific number of working days after a starting date.
  • Subtract Working Days — Find the date that falls a specific number of working days before a starting date.

2. Select your dates

Enter the starting date and, when required, the ending date. The calculator processes the dates automatically.

3. Choose your holiday settings

You can calculate using:

  • Weekdays only
  • US federal holidays
  • Custom holidays

This gives you more control over what should count as a non-working day.

4. Calculate your result

Click the calculation button to see your result. The calculator provides a clear summary so you can quickly understand the number of working days or the resulting date.

Calculate Working Days Between Two Dates

One of the most common reasons people use a working days calculator USA is to determine how many workdays fall between two dates.

For example, you might need to calculate:

  • The number of business days available for a project
  • How many workdays remain before a deadline
  • The number of working days between a start date and delivery date
  • A notice period
  • Processing or turnaround time
  • Employee workdays within a specific period
  • Business days between two calendar dates

Instead of manually counting weekdays on a calendar, you can enter your dates and let the calculator handle the calculation.

Depending on the holiday setting you select, weekends and applicable holidays can be excluded from the result.

What Is a Working Day?

A working day generally refers to a day on which work is normally performed. For many Monday-to-Friday schedules, Saturday and Sunday are treated as non-working days.

However, working schedules vary between organizations and industries. Some businesses operate seven days a week, while others may have additional company holidays or scheduled days off.

That’s why the calculator allows you to select your holiday preferences and add custom non-working dates when needed.

Working Days vs. Business Days

The terms working days and business days are often used interchangeably.

In many common calculations, both refer to weekdays, usually Monday through Friday, excluding applicable holidays.

However, the exact definition can depend on the situation.

For example:

  • A company may define its business days as Monday through Friday.
  • A government office may follow the federal holiday schedule.
  • A private employer may observe additional holidays.
  • A company operating on weekends may use a different working schedule.

For this reason, always use the holiday and custom-date settings that match the schedule you’re calculating.

Working Days Excluding US Federal Holidays

The calculator can account for US federal holidays when you select the appropriate holiday option.

The federal holiday schedule established by U.S. law includes holidays such as New Year’s Day, Martin Luther King Jr.’s Birthday, Washington’s Birthday, Memorial Day, Juneteenth National Independence Day, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving Day, and Christmas Day.

When a federal holiday falls on a Saturday or Sunday, the observed date for most federal employees can move to Friday or Monday. For example, the official 2026 federal holiday schedule lists Friday, July 3, 2026, as the observed date for Independence Day because July 4 falls on a Saturday.

Important note about federal holidays

Federal holidays are established for federal employees. Private companies, schools, banks, contractors, and other organizations may use different holiday schedules.

If you’re calculating working days for a private business, check that organization’s holiday policy before using the result for an official deadline.

You can also use the custom holidays option in the calculator when your schedule includes company-specific holidays or other non-working dates.

How Does a Business Days Calculator Work?

A basic business-day calculation starts with the calendar days between two dates and removes the days that should not count as working days.

For a typical Monday-to-Friday schedule, the calculation generally follows this process:

  1. Start with the selected date range.
  2. Check each calendar date.
  3. Identify Saturdays and Sundays.
  4. Exclude weekends when the calculator is using a standard weekday schedule.
  5. Check the selected holiday calendar.
  6. Exclude applicable holidays.
  7. Count the remaining working days.
  8. Display the final result.

This approach is useful when you need more than a simple calendar-day difference.

For example, a period of 10 calendar days may contain fewer than 10 working days because weekends and holidays can fall inside the period.

How to Calculate 10 Business Days From a Date

If you need to find a date that is 10 business days from a starting date, use the Add Working Days option.

Enter your starting date, choose the number of working days, select the appropriate holiday setting, and calculate the result.

The same process can be used for:

  • 5 business days from a date
  • 10 business days from a date
  • 15 business days from a date
  • 20 business days from a date
  • 30 business days from a date
  • Any other number of working days

This can be useful when estimating project deadlines, processing times, delivery schedules, appointments, or administrative deadlines.

How to Subtract Business Days From a Date

Sometimes you need to work backward from a deadline.

For example, you may need to know:

  • What date was 5 business days before a deadline?
  • What date was 10 business days before an appointment?
  • What date was 20 working days before a project milestone?

Use the Subtract Working Days option to calculate the date automatically.

This can save time when planning schedules that depend on business-day deadlines rather than ordinary calendar days.

Working Days Excluding Weekends and Holidays

A calendar contains seven days per week, but a standard Monday-to-Friday business schedule normally counts only weekdays as working days.

For example:

  • Monday — working day
  • Tuesday — working day
  • Wednesday — working day
  • Thursday — working day
  • Friday — working day
  • Saturday — weekend
  • Sunday — weekend

If a holiday occurs during the period, that date may also need to be excluded.

That’s why simply subtracting one date from another does not always give you the number of business days you actually need.

The US working days calculator helps separate calendar days from working days so you can get a more useful result.

When Should You Use a US Working Days Calculator?

A working-day calculator can be useful for many everyday and professional situations.

Project planning

Calculate the number of workdays available between a project start date and deadline.

Business deadlines

Determine when a task or process will be completed after a specified number of business days.

Notice periods

Estimate dates based on working-day requirements rather than calendar days.

Delivery and processing schedules

Calculate expected dates when a company specifies a processing time in business days.

Employee scheduling

Count weekdays within a specific period when planning work schedules.

Administrative tasks

Calculate deadlines that depend on working days rather than weekends.

Financial and business planning

Use business-day calculations when a process follows a weekday schedule and certain holidays need to be excluded.

US Working Days Calculator Features

HakanTools’ calculator provides several useful options in one place.

Count working days

Find the number of working days between two dates.

Add working days

Calculate a future date after a specified number of working days.

Subtract working days

Calculate a previous date based on a number of working days.

US federal holidays

Include applicable US federal holidays in your calculation.

Custom holidays

Add your own non-working dates when your organization follows a different schedule.

Weekend handling

Exclude Saturdays and Sundays for standard Monday-to-Friday calculations.

Cross-year calculations

Calculate working days across different months and years.

Instant results

The calculation happens directly in your browser, so you can get results without manually checking multiple calendar pages.

Copy and print

Use the available actions to copy your result or prepare it for printing.

How Many Working Days Are Between Two Dates?

The exact number depends on the dates you enter and which weekends and holidays are excluded.

For example, two dates that are 14 calendar days apart will not necessarily contain 14 working days. A standard Monday-to-Friday schedule excludes Saturdays and Sundays, and additional holidays may reduce the number further.

To get an accurate result for your specific dates, enter them into the calculator above and select the appropriate holiday option.

Does the Calculator Include US Federal Holidays?

Yes. The calculator provides a US federal holiday option.

The official federal holiday schedule includes 11 holidays established by federal law. The Office of Personnel Management publishes the holiday schedule and explains the observed-date rules used for federal employees.

Keep in mind that a private employer does not necessarily follow the federal employee holiday calendar. If your organization has a different schedule, use the custom holiday option where appropriate.

Is a Business Day the Same as a Calendar Day?

No.

A calendar day is any day on the calendar, including weekdays, weekends, and holidays.

A business day generally refers to a day counted as a normal business or working day under a particular schedule.

For a standard Monday-to-Friday schedule, Saturday and Sunday are normally excluded. Depending on the calculation, holidays may also be excluded.

Can I Add My Own Holidays?

Yes.

If your company, organization, school, or project has additional non-working days, you can add custom holidays to the calculator.

This is useful when your schedule differs from the standard US federal holiday calendar.

Does the Calculator Work Across Different Years?

Yes.

You can calculate working days across different months and years. This is useful for long projects, annual planning, contracts, schedules, and deadlines that cross from one year into another.

Can I Calculate Business Days From Today?

Yes.

If you want to know what date falls a certain number of business days from today, use the Add Working Days option and enter today’s date as the starting date.

You can use the same method for questions such as:

  • What date is 5 business days from today?
  • What date is 10 business days from today?
  • What date is 20 business days from today?
  • What date is 30 business days from today?

Remember to select the holiday setting that matches the schedule you’re working with.

Is This a Federal Employee Holiday Calculator?

It can be used with the US federal holiday schedule, but it is not limited to federal employees.

The federal holiday option is based on the holiday calendar published by the U.S. Office of Personnel Management. Private employers and other organizations may follow different holiday policies.

For company-specific calculations, use custom holidays when necessary.

Frequently Asked Questions

What is a US working days calculator?

A US working days calculator is an online tool that calculates working days or business days between dates. It can also be used to add or subtract working days while accounting for weekends and selected holidays.

How many working days are between two dates?

The number depends on the dates, weekends, and holidays included in the calculation. Enter the two dates into the calculator to determine the working-day count for your specific period.

Are Saturday and Sunday counted as working days?

For a standard Monday-to-Friday schedule, Saturday and Sunday are normally treated as non-working days. However, businesses with weekend schedules may use different rules.

Are US federal holidays excluded?

They can be. Select the US federal holiday option when you want applicable federal holidays to be excluded from the calculation.

What is the difference between a working day and a business day?

In many everyday situations, the terms mean the same thing: a normal weekday used for business or work. However, the exact definition can vary between employers and organizations.

How do I calculate 10 business days from a date?

Select Add Working Days, enter your starting date, enter 10 as the number of working days, choose your holiday settings, and calculate the result.

Can I subtract business days from a date?

Yes. Select Subtract Working Days, enter the starting date and number of working days, then calculate the result.

Can I add custom holidays?

Yes. Use the custom holiday option when your organization has additional non-working dates that are not included in the selected standard holiday schedule.

Does the calculator work across different years?

Yes. You can calculate working days between dates that fall in different months or years.

Are federal holidays the same for every US business?

No. Federal holidays are established by law for federal employees. Private employers may choose their own holiday policies and may observe additional or different days.

Calculate Your Working Days

Stop manually counting weekdays on a calendar.

Use the US working days calculator above to count working days between dates, add business days to a date, or subtract business days from a deadline. You can also account for US federal holidays or add custom non-working dates to better match your schedule.

For everyday planning, project deadlines, business schedules, and date calculations, HakanTools gives you a simple way to calculate working days without doing the math manually.

Try the calculator now and get your working-day result in seconds.

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