Count business days between dates or add business days to a starting date, with optional holiday exclusions and workweek settings.
Many contracts, workflows, and internal procedures measure time in business days rather than calendar days. That usually means weekends are excluded and, depending on the rule you are using, certain public holidays are excluded too.
This calculator counts business days between dates or adds business days to a starting date. It supports a weekday-only or Monday-to-Saturday workweek, an optional U.S. federal holiday schedule, and an extra count of non-working days. That extra count is useful for rough planning, but it is not a substitute for entering the actual closure dates when an exact deadline matters.
Business-day counting is easy to get wrong once weekends, holidays, and trigger-date rules are involved. This page makes those assumptions visible so you can compare inclusive versus exclusive counting and see how non-working days move a target date.
Business Days = Calendar Span − Weekend Days − Excluded Holidays If you use add mode, the page advances day by day until the requested number of business days has been counted.
Result: 19 business days
From Feb 9 to Mar 9, 2026 is 28 calendar days. Subtracting 8 weekend days and 1 excluded holiday gives 19 business days.
Business-day calculations usually start with a simple question: which days count as working days for the rule you are following? That can mean Monday through Friday, Monday through Saturday, or a custom calendar that excludes local or company holidays.
Contracts, shipping estimates, internal approvals, cure periods, and filing windows often use business days rather than raw calendar days. This worksheet helps you see how weekends, holidays, and counting method choices change the final date.
This page is a general business-day worksheet, not a source of legal or court-authority rules. If you use a simple count of extra non-working days instead of actual closure dates, treat the resulting outer date as a buffer rather than an exact deadline. If a deadline matters, confirm the governing contract, statute, court rule, or agency guidance separately before relying on the count.
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This page counts business days in two modes. In count mode it walks the date range one day at a time, applies the selected include-start or exclude-start rule, excludes weekends based on the selected workweek, and optionally excludes observed U.S. federal holidays plus any extra user-supplied holiday count. In add mode it advances forward until the requested number of business days has been counted under the same weekend and preset-holiday rules.
The page is meant for deadline planning, not as a substitute for a specific court or contract rule. Filing rules, service rules, court closures, and jurisdiction-specific holiday calendars can change which days legally count, so the governing rule still controls.
A business day is typically a working day in the calendar you are using. Many contexts mean Monday through Friday, excluding relevant holidays, but some workplaces, industries, and jurisdictions use different calendars.
This varies by context. Some rules exclude the trigger date and count forward from the next business day, while others include the start date. This page lets you compare the two counting methods, but it does not decide which rule governs your situation.
Exclude the holidays or closure days that apply to the deadline you are tracking. The U.S. federal preset is only one option; state, court, company, or contract calendars may differ.
No. If you enter only a count of extra skipped days, the page can show a buffered outer date, but it still does not know the actual dates of those closures. For exact legal or court deadlines, use the real holiday calendar rather than an approximate count.
If a contract states "10 business days," the elapsed calendar time will usually be longer than 10 calendar days because weekends and some holidays are skipped. The exact span depends on the workweek and holiday calendar you use.
Many business and legal rules extend the final day to the next business day, but that is not universal. Treat this page as a counting worksheet and confirm the controlling rule separately.
No. Business days vary by country. In many Middle Eastern countries, the weekend is Friday–Saturday. Some countries have different national holidays. Always use the local business calendar.