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Business Days Calculator

Business days are the Mondays through Fridays in a date range, counted inclusively — both endpoints count when they land on a weekday. This calculator walks the calendar one day at a time, so the count is exact for any range; it excludes weekends but not public holidays, which differ by country and employer.

Business days
32
Weekend days
14
Total days
46
Work weeks
6.4
32 business days in the range
About 6.4 work weeks, weekends excluded — public holidays still count here.
46 days · 32 business
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Business days
Weekends
Inputs
From
To
Public holidays are not excluded
This counts every Mon–Fri in the range — 32 of them here — but it doesn't know your public holidays. If your window includes weekday holidays, subtract them yourself or the deadline lands early.
The range is inclusive
Both the start and end dates count when they fall on a weekday, so Monday to the same Monday is 1 business day, not 0. Sanity check: full weeks × 5, plus the leftover weekdays at each end.
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Uses your inputs above
32 business days. Want to try a variation?
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The math

Reviewed 2026
Formula
count weekdays from start to end inclusive

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Date difference
Countdown

Example: how business days is calculated

Step-by-step with default inputs

Suppose you put the default values into Business Days Calculator:

From
2026-05-01
To
2026-06-15

Plug those into the formula count weekdays from start to end inclusive and the result is:

Business days
32

How does the business days calculator work?

The calculator steps through every date from From to To inclusive and counts the ones whose weekday is Monday through Friday. Counting inclusively means a range that starts and ends on weekdays includes both — a Monday to the same Monday is 1 business day, not 0. Total days equals the span plus one for the same reason, and weekend days is the difference between the two. Work weeks divide the business-day count by 5. The method is deliberately minimal: it excludes Saturdays and Sundays and nothing else, because public holidays differ by country, state, and employer, and no single list would be correct for everyone. To adapt the result to your own calendar, count the holidays that fall on weekdays inside your range and subtract them.

Last reviewed July 2, 2026 · Editorial policy

Frequently asked questions

Are both the start and end dates counted?

Yes — the range is inclusive, so if From and To both fall on weekdays, both count. A range from a Monday to that same Monday is 1 business day.

Does the calculator exclude public holidays?

No — only Saturdays and Sundays are excluded, because holiday calendars differ by country, state, and employer. Count the weekday holidays inside your range and subtract them from the result.

How do I estimate business days without counting each one?

Multiply the full weeks by 5, then add the leftover weekdays at each end of the range. The calculator does the exact day-by-day walk, which is why its answer can differ from a rough five-sevenths estimate by a day or two.

What does the work weeks figure mean?

It is the business-day count divided by 5, a standard Monday-to-Friday week. For example, 32 business days reads as 6.4 work weeks.

How accurate is this business days calculator?

The math is deterministic — the same inputs always produce the same output, and the formula is shown above. Accuracy of the answer for your situation depends on how well your inputs match reality and how well the formula models the question.

How do I share my result?

Hit Share at the top of the page. Every input you change is encoded in the URL, so a permalink reproduces exactly what you see. No account needed.

Guides

How many business days are between two dates?How to count business days between two dates — weekdays minus weekends and holidays — and why a '5 business day' window can span more than a week.