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. Use this page when the rule is based on weekdays rather than all calendar days.
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, formal deadlines, service timelines 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, service provider, organization, courier, or project schedule 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
weekday processing and processing holds
ACH transfers, settlements, and verification periods often move on weekdays only
formal and operations deadlines
notice periods and response windows may exclude weekends but still need holiday review
Support and project service timelines
teams often promise turnaround within a number of working days
Business Days vs Calendar Days
5 business days from Monday
Usually the following Monday
Five weekdays are counted, so the weekend in between does not count at all.
5 calendar days from Monday
Usually Saturday
Calendar-day counting includes every day, so the answer lands earlier than the business-day version.
10 business days
Usually two full work weeks
This often looks like "about 14 calendar days", but the exact answer depends on the starting weekday.
Which Counting Rule Should You Use?
Use business days
Choose this when the wording says business days, working days, weekdays, service timelines, processing days, weekday processing days, or shipping days.
Use calendar days
Choose the Days Calculator when the rule says days without any special qualifier, or when weekends still count.
Check the written rule
If the wording mentions service providers holidays, review teams holidays, carrier holidays, or cut-off times, this page gives the base weekday math but not the institution-specific override.
Does the Start Date Count?
This is one of the most common deadline mistakes. Some guidelines count from the same day, while others start counting on the next business day. The math can be correct while the starting assumption is wrong.
Use this page to do the weekday-only math, but always check the wording of the rule you are working from. If it says within 5 business days, after receipt, from the issue date, or by the next business day, those phrases can change which day is treated as day one.
Why Holiday Rules Need Extra Care
Weekday-only counting is the common baseline, but it is not always the final rule. service providers, carriers, review teams, and organizations 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, service providers transfer, or formal submission 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, service providers, carrier, and company guideline.
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, processing holds, formal notices, and support service timelines.
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 service timelines calculations.
Not always. The core Monday-to-Friday rule is the same, but carriers and service providers 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.