Business Days Calculator
Calculate business days between dates, add or subtract working days from any date, or find a date a certain number of business days from today.
Note: Business days exclude weekends (Saturday & Sunday). Public holidays are not excluded.
Business Days Between Dates
Add/Subtract Business Days
Business Days From Today
Common Business Day Calculations
Business day calculations are essential for shipping estimates, legal deadlines, SLA commitments, and project planning. A standard work week has 5 business days (Monday through Friday), so 10 business days equals 2 work weeks, and 20 business days is approximately one calendar month. Each link below shows the exact target date with a calendar that highlights only working days, making it easy to visualize weekends that are skipped.
What Counts as a Business Day?
In most date and deadline calculations, business days means Monday through Friday. That is the definition used on this site. Saturdays and Sundays are skipped automatically.
Public holidays are not removed here, because they depend on the country, state, bank, employer, courier, or contract involved. That matters for searches like what is a business day, what are business days, and what counts as a business day: the core meaning is usually weekdays, but some industries apply extra holiday rules.
As a quick reference, 1 business day is usually the next weekday, 5 business days is one work week, 10 business days is two work weeks, and a full year usually contains around 260 weekdays before holidays are taken out.
Where Business-Day Counting Matters Most
Shipping and delivery windows
couriers often quote 3, 5, 7, or 10 business days rather than calendar days
Banking and payment holds
ACH transfers, settlements, and verification periods often move on weekdays only
Legal and compliance deadlines
notice periods and response windows may exclude weekends but still need holiday review
Support and project SLAs
teams often promise turnaround within a number of working days
Why Holiday Rules Need Extra Care
Weekday-only counting is the common baseline, but it is not always the final rule. Banks, carriers, courts, and employers can all define their own holiday calendars, cut-off times, and processing windows. That means two systems can agree on what a business day usually is and still reach different deadlines in edge cases.
Use this calculator for the core Monday-to-Friday math. Then, if a shipment, bank transfer, or legal filing has a named holiday schedule attached to it, verify that last step against the specific institution involved.
Frequently Asked Questions
A business day usually means Monday through Friday. This calculator excludes Saturdays and Sundays from all counts. Public holidays are not excluded, because they vary by country, region, bank, carrier, and company policy.
Because weekends do not count. A promise such as "5 business days" often stretches across a full calendar week or longer, depending on which day you start. That is why business-day counting is common for shipping windows, payment holds, legal notices, and support SLAs.
The calculator checks each date in the range and counts only Monday through Friday. It also shows the total calendar days for comparison, so you can see exactly how many weekend days were skipped.
A standard week has 5 business days. A month usually has about 20 to 23 business days depending on where weekends fall. A full year has roughly 260 weekdays before public holidays are considered.
Yes. Use the "Add/Subtract Business Days" calculator to find a deadline date. Enter your start date and the number of business days, and the calculator will skip weekends to find the correct target date. This is useful for shipping estimates, project deadlines, and SLA calculations.
Not always. The core Monday-to-Friday rule is the same, but carriers and banks may also exclude their own holiday schedules or apply cut-off times. Use this calculator for the base weekday math, then confirm any carrier- or institution-specific rule separately if the deadline matters.