Ready to calculate
Select dates and click Calculate// count working days between any two dates
Calculate the number of business days between two dates, add or subtract working days, and exclude weekends and public holidays instantly.
Ready to calculate
Select dates and click CalculatePick "Days Between Dates", "Add Business Days", or "Subtract Business Days" using the tabs above.
Select your start date and end date (or number of days to add/subtract).
Toggle US public holiday exclusion and Saturday work day settings, then click Calculate.
A business days calculator counts only Monday–Friday working days between two dates, skipping weekends and optionally public holidays. It's essential for legal, financial, and project deadlines where calendar days aren't the right measure.
A business day is typically Monday through Friday, excluding weekends (Saturday and Sunday) and public holidays. In most countries and industries, business days are the standard working days when offices and banks are open.
The calculator counts the start date but excludes the end date by default, following the most common convention used in legal and business contexts (e.g., "5 business days from Monday" ends on the following Monday).
The tool excludes all 11 federal US public holidays: 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.
Yes. The calculator handles date ranges spanning multiple years, correctly identifying weekends and holidays for each year in the range. There is no practical limit on the date range you can calculate.
Switch to the "Add Business Days" tab, enter your start date and the number of business days to add. The tool will calculate the exact resulting date, skipping weekends and any holidays you've opted to exclude.
If your start date falls on a Saturday or Sunday, the calculator will still process correctly — that day simply doesn't count as a business day. The count begins from the next available working day.
This tool is designed for general planning and estimation. For legally binding deadlines — such as court filings, contract notice periods, or regulatory submissions — always consult a qualified legal professional and verify the applicable jurisdiction's rules.
Yes. Check the "Include Saturday as work day" option to treat Saturdays as business days. Only Sundays (and optionally holidays) will be excluded in this mode, which is common in some industries and regions.
A business days calculator is a specialized tool that counts only working days — typically Monday through Friday — between two dates. Unlike a simple calendar day counter, it automatically skips weekends and can optionally exclude public holidays, giving you an accurate count of actual working days in any date range.
Whether you're managing project deadlines, calculating invoice payment windows, tracking shipping timelines, or computing legal notice periods, knowing the exact number of business days is often far more useful than knowing the raw number of calendar days.
Calendar days count every day from one date to another — including Saturdays, Sundays, and holidays. Business days, on the other hand, count only the days when offices and businesses are typically open and operational.
For example, if you need to deliver something "within 10 calendar days," that could include two full weekends. But "10 business days" means exactly ten Monday-to-Friday working days, which translates to exactly two full work weeks. The difference matters enormously in legal, financial, and logistical contexts.
To manually calculate business days between two dates, you would need to:
For a short range, this is manageable — but for longer periods spanning months or years, it becomes impractical. Our Business Days Calculator handles all of this instantly, including US public holiday detection for any year.
Beyond counting days between two dates, this tool also supports adding or subtracting a specified number of business days from a given start date. This is particularly useful for:
When the "Exclude US Public Holidays" option is enabled, the calculator accounts for all 11 US federal public holidays:
When a holiday falls on a Saturday, it is typically observed on the preceding Friday. When it falls on a Sunday, it is observed on the following Monday. Our calculator correctly handles these observed holiday shifts.
Legal and Compliance: Many legal deadlines are specified in business days. Responses to legal notices, contract cure periods, regulatory filing windows, and court deadlines are commonly defined in working days to ensure all parties have equal opportunity to respond during actual business hours.
Finance and Banking: Settlement periods for stock trades (T+2, T+1), wire transfer windows, and ACH processing times are all measured in business days. Payment terms like "Net 15" or "Net 30" also refer to business days in many contracts.
E-commerce and Logistics: Shipping carriers and fulfilment centers quote delivery times in business days. Calculating the exact expected delivery date requires knowing which days are weekends and holidays in the shipping period.
Human Resources: Employee notice periods, payroll processing windows, and leave accrual calculations often use business days as the base unit.
Software Development: Sprint planning, ticket SLAs, bug fix response times, and release schedules are frequently tracked in business days to align with team availability.
Keep these considerations in mind when using any business day calculator:
Our tool is entirely browser-based — no sign-up, no data sent to a server, and no account required. It runs instantly in your browser, handles multi-year ranges, correctly identifies floating holidays (like Thanksgiving, which falls on a different date each year), and provides a clear breakdown of your results including a visual calendar strip and a list of excluded holidays.
Whether you're a freelancer calculating invoice terms, a project manager planning sprints, a developer working on SLA compliance, or simply someone trying to figure out when a deadline lands — this tool gives you a fast, reliable answer in seconds.