Business Days Calculator
Count working days between two dates or find what date falls after a given number of business days. Automatically skips weekends and US federal holidays.
All calculations happen in your browser. No data is sent anywhere.
Count Business Days
Enter a start and end date to count how many business days fall within that range, including both endpoints.
Results
| Calendar Days | — |
|---|---|
| Business Days | — |
| Weekend Days | — |
| Holidays Excluded | — |
Add Business Days
Enter a start date and a number of business days to add. The calculator skips weekends and holidays to find your end date.
Results
| End Date | — |
|---|---|
| Calendar Days Spanned | — |
| Business Days Added | — |
2025 US Federal Holidays
The following 11 holidays are recognized as official US federal holidays in 2025 and are excluded from the business day count when the holiday option is checked.
| Holiday | Date | Day |
|---|---|---|
| New Year's Day | Jan 1 | Wednesday |
| Martin Luther King Jr. Day | Jan 20 | Monday |
| Presidents' Day | Feb 17 | Monday |
| Memorial Day | May 26 | Monday |
| Juneteenth National Independence Day | Jun 19 | Thursday |
| Independence Day | Jul 4 | Friday |
| Labor Day | Sep 1 | Monday |
| Columbus Day | Oct 13 | Monday |
| Veterans Day | Nov 11 | Tuesday |
| Thanksgiving Day | Nov 27 | Thursday |
| Christmas Day | Dec 25 | Thursday |
Holidays for 2024 and 2026 are also built in. State-level or company-specific holidays are not included.
How Business Days Are Used
What counts as a business day?
A business day is any Monday through Friday that is not an official public holiday. Most legal contracts, shipping estimates, financial settlements, and government processing timelines are stated in business days.
- Included: Monday–Friday non-holidays
- Excluded: Saturday and Sunday
- Excluded (optional): US federal holidays
SLA and contract deadlines
Service Level Agreements (SLAs) commonly specify response or resolution windows in business days. For example, a "5 business day" SLA starting on a Thursday gives you until the following Thursday — but only if no holidays fall in between. Use the Add Business Days tab to find exact deadlines.
- Customer support response windows
- Legal filing and response deadlines
- Government processing timelines
Invoice and payment terms
Payment terms like "Net 30" or "Net 15" are sometimes interpreted as business days, particularly in B2B contracts. Knowing the exact due date avoids late fees and helps with cash flow planning. Add 30 business days to your invoice date to find the exact payment deadline.
- Net 15, Net 30, Net 60 terms
- Early payment discount windows
- ACH and wire transfer settlement
Project planning and scheduling
When building project timelines, working in business days gives a more realistic picture than calendar days. A two-week sprint is 10 business days, not 14 calendar days. Counting holidays separately helps you avoid over-committing during holiday-heavy months like November and December.
- Sprint planning and agile estimates
- Milestone and delivery scheduling
- Resource and capacity planning
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What is a business day?
A business day is any weekday (Monday through Friday) that is not a public holiday. Saturdays, Sundays, and official US federal holidays are not counted as business days. Most contracts, SLAs, and payment terms use business days rather than calendar days.
Are US federal holidays counted as business days?
No. When the "Exclude US federal holidays" checkbox is checked, the calculator skips all 11 official US federal holidays per year — including New Year's Day, Independence Day, Thanksgiving, and Christmas. Uncheck the box if you only want to exclude weekends.
How do I add business days to a start date?
Switch to the "Add Business Days" tab, enter your start date and the number of business days to add, then click Calculate. The calculator advances day by day, skipping weekends and holidays, until the specified number of business days have been counted.
What if the calculated end date falls on a weekend or holiday?
When adding business days, the calculator only counts and lands on valid business days — it automatically skips weekends and holidays. The result will always be a Monday through Friday non-holiday date.
What is the difference between business days and working days?
The terms are generally interchangeable. Both refer to weekdays (Monday–Friday) excluding public holidays. Some industries may make a distinction, but for standard legal and commercial calculations, business days and working days mean the same thing.