Working Days Calculator

Count business days accurately

Choose a start and end date and the calculator counts the weekdays between them, optionally including the end date. Enter how many public holidays fall in the range and they're subtracted from the working-day total.

It instantly breaks down the range into total days, weekdays and weekend days.

Great for

• Project deadlines and SLAs
• Payroll and leave planning
• Delivery and turnaround estimates

Key features at a glance

• Counts business days between two dates
• Excludes Saturdays and Sundays
• Subtract a number of public holidays from the total
• Option to include the end date
• Breaks the range into total, weekday, and weekend days
• Runs in your browser — no signup required

Why business days matter more than calendar days

Many real-world timelines run on working days, not calendar days. A service-level agreement promising delivery 'within five business days', a payment due in a number of working days, or a project deadline set in weekdays all ignore weekends. Counting calendar days instead would give the wrong date, sometimes by several days once a weekend or two falls in the range.

Calculating business days by hand is error-prone, especially over long spans where you have to track which days are weekends. This calculator counts the weekdays between two dates automatically, so a deadline or turnaround estimate lands on the correct day. It is the difference between promising something for a Saturday when no one is working and giving an accurate working-day date.

Accounting for public holidays

Weekends are not the only non-working days. Public holidays fall on weekdays and close businesses, so a true working-day count must exclude them too. Because holidays vary enormously by country, region, and even industry, there is no single universal list, which is why this tool lets you enter how many holidays fall within your date range and subtracts them from the total.

This keeps the calculator accurate wherever you are without assuming a particular country's calendar. By counting the weekdays and then deducting the holidays you specify, it produces a working-day figure that reflects your actual non-working days. For deadlines and SLAs that must account for public holidays, this manual adjustment gives a realistic result rather than an optimistic one.

Inclusive counting and the breakdown

Whether to count the end date is a common ambiguity, so the calculator offers an include-end-date option. Counting inclusively matters when both the first and last day are working days you want to include — for instance, a task that runs from Monday to Friday spans five working days inclusive, not four. Choosing the right mode avoids being a day off on a deadline.

The breakdown into total days, weekdays, and weekend days adds useful context. It shows not just the working-day count but how the whole period is composed, which helps when planning resources or explaining a timeline. Seeing that a three-week span contains, say, fifteen weekdays and six weekend days makes the shape of the schedule clear at a glance.

Tips for counting working days

• Use the include-end-date option when both endpoints are working days
• Enter the public holidays in your region to subtract them
• Count business days, not calendar days, for SLAs and deadlines
• Check the weekday/weekend breakdown when planning resources
• Remember holidays differ by country, so adjust for your location

Why choose our working days calculator?

Our calculator is completely free with no signup, no limits, and no subscription. It runs entirely in your browser, returns results instantly, and works offline with nothing sent to a server.

It is one of more than 200 free tools on ToopTools, and you can pin it to your My Workspace, a personalized workspace where you keep the tools you use most in a single dashboard. Beside the date difference and week number tools, it covers business-day scheduling in one place.

Common use cases

People use the working days calculator for project deadlines and SLAs measured in business days, for payroll and leave planning that counts working days, and for delivery and turnaround estimates that skip weekends. It gives an accurate working-day count for any range.

Project managers set realistic deadlines, HR teams calculate leave and notice periods, and businesses quote turnaround times. Because it excludes weekends and lets you subtract holidays, the result reflects the days work actually happens.

Is the working days calculator free?

Yes. It is completely free with no account, no sign-up, and no usage limits. Count as many date ranges as you like at no cost.

Does it exclude weekends?

Yes. The calculator counts only weekdays, automatically excluding every Saturday and Sunday in the range, which is what most business-day calculations require.

How do I account for public holidays?

Enter the number of public holidays that fall within your date range and the calculator subtracts them from the working-day total. Because holidays vary by region, you supply the count for your location.

Should I include the end date?

Include the end date when both the start and end are working days you want to count, such as a task running Monday to Friday. The option lets you switch between inclusive and exclusive counting.

What is the difference between business days and calendar days?

Calendar days count every day including weekends, while business days count only weekdays, and usually exclude public holidays too. SLAs and deadlines are typically measured in business days.

Does it count the same way as a spreadsheet NETWORKDAYS function?

Yes, in principle. Like the NETWORKDAYS function found in spreadsheet software, it counts the weekdays between two dates and lets you exclude holidays. The main difference is that you enter the number of holidays directly rather than referencing a holiday list, since holidays vary by region.

Are my dates kept private?

Yes. Everything is computed in your browser and nothing is uploaded, so the dates you enter stay private and the tool works without an internet connection.

How do I calculate the number of working days between two dates?

Enter a start and end date and the calculator counts the weekdays between them, skipping Saturdays and Sundays. Add your public holidays to exclude those too, giving you an accurate count of business days for projects, leave, or deadlines.

Does the working days calculator work offline?

Yes. The calculation runs entirely in your browser, so once the page has loaded the tool works without an internet connection, and your dates are never uploaded — they stay private on your own device.