Business Day Calculator (USA)
Official US Federal Holidays Observed
- New Year's Day: January 1st
- Martin Luther King Jr. Day: 3rd Monday in January
- Washington's Birthday (Presidents' Day): 3rd Monday in February
- Memorial Day: Last Monday in May
- Juneteenth National Independence Day: June 19th
- Independence Day (4th of July): July 4th
- Labor Day: 1st Monday in September
- Columbus Day / Indigenous Peoples' Day: 2nd Monday in October
- Veterans Day: November 11th
- Thanksgiving Day: 4th Thursday in November
- Christmas Day: December 25th
What is a Business Day Calculator and Why is it Essential?
A business day calculator is an indispensable productivity tool designed for American enterprises, legal professionals, shippers, and HR teams. Unlike standard calendar days, business days (or working days) strictly encompass Monday through Friday, automatically omitting Saturdays, Sundays, and official federal holidays recognized by the United States government.
How to Calculate Business Days (Step-by-Step)
Computing business days online with our tool takes just a few clicks:
- Select Your Calculation Mode: Choose + Add Days to find a future deadline, - Subtract Days to calculate retroactively, or 📅 Between Dates to count the exact number of working days between two dates.
- Enter Your Dates & Values: Select your starting date and input the required number of working days (or select the ending date).
- Toggle Federal Holidays: Keep the "US Holidays" option checked to automatically exclude paid federal government bank holidays.
- Copy or Export: Instantly view the target calendar date, total weekend days skipped, and generate a printable PDF audit report.
U.S. Federal Holidays Schedule Reference
| Federal Holiday | Rule / Occurrence |
|---|---|
| New Year's Day | January 1st (Observed Friday if Sat / Monday if Sun) |
| Martin Luther King Jr. Day | Third Monday in January |
| Presidents' Day | Third Monday in February (Washington's Birthday) |
| Memorial Day | Last Monday in May |
| Juneteenth | June 19th (National Independence Day) |
| Independence Day | July 4th (4th of July Celebration) |
| Labor Day | First Monday in September |
| Columbus Day | Second Monday in October (Indigenous Peoples' Day) |
| Veterans Day | November 11th |
| Thanksgiving Day | Fourth Thursday in November |
| Christmas Day | December 25th |
Business Days vs. Calendar Days: Critical Differences
Confusing calendar days with business days can result in severe financial penalties, missed contract closings, or shipping disputes:
Only Monday through Friday count. Saturdays, Sundays, and federal holidays are skipped entirely.
- 10 Business Days = Typically 14 to 16 Calendar Days
- Standard for ACH transfers, court deadlines, commercial shipping
Every single day on the calendar counts, including weekends, Christmas, and federal bank breaks.
- 10 Calendar Days = Exactly 10 chronological days
- Used in residential leases, hotel bookings, warranties
Excel & Google Sheets Business Day Formulas
Need to automate your working day spreadsheets? Here are the industry-standard formulas for Microsoft Excel and Google Sheets:
| Action | Spreadsheet Formula |
|---|---|
| Add Working Days Start date in A1, days in B1 |
=WORKDAY(A1, B1) |
| Add Days with Holidays Holidays listed in H1:H10 |
=WORKDAY(A1, B1, H1:H10) |
| Count Days Between Dates Start in A1, End in A2 |
=NETWORKDAYS(A1, A2) |
| Custom Weekend Schedule Custom days off (e.g. Sunday only) |
=NETWORKDAYS.INTL(A1, A2, 11) |
Manual Calculation Rules & Inconveniences
If calculating working days manually, adhere to standard U.S. federal conventions:
When a deadline lands on a Sunday, it legally shifts to Monday.
The day of notice or order placement does not count as Day 1.