Business Days Calculator

Count working days (Mon–Fri) between two dates, excluding weekends.

Business Days Calculator

Count working days (Mon–Fri) between two dates, excluding weekends.

Start date

End date

Include start/end dates themselves?

Enter values above and click Calculate — results will appear here with the formula explained.

count of Mon–Fri dates within the selected range

How does this work?

Business-day math strips weekends from a range, leaving the days offices actually operate. Delivery estimates, notice periods, settlement dates and project timelines overwhelmingly run on this clock rather than calendar days.

Public holidays are the complication: they differ by country, region and even employer, so this tool excludes only Saturdays and Sundays. Subtract known holidays manually when precision matters — most ranges contain just a handful.

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Quick Answer

Business Days Calculator: Count working days (Mon–Fri) between two dates, excluding weekends. Formula: count of Mon–Fri dates within the selected range. Example: August 3–28, 2026 spans 26 calendar days but only 18 are Mondays-through-Fridays once four weekend pairs drop out.

How to Use This Calculator

1Enter the first and last dates of your range.
2Decide whether the endpoints themselves count as working days.
3Remember to subtract public holidays yourself for your locale.

Formula Used

count of Mon–Fri dates within the selected range

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Worked Example

August 3–28, 2026 spans 26 calendar days but only 18 are Mondays-through-Fridays once four weekend pairs drop out.

AdSense ready — add NEXT_PUBLIC_GOOGLE_ADSENSE_PUBLISHER_ID

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Frequently Asked Questions

QAre public holidays excluded?

Not automatically — holidays are country-specific. Count them separately and deduct from the result.

QIs Saturday ever a business day?

In some industries and countries yes, but the standard Mon–Fri convention applies here.

QHow long is '10 business days'?

Exactly two calendar weeks when no holidays intervene — fourteen calendar days.

Formula Used

count of Mon–Fri dates within the selected range

Frequently Asked Questions

QAre public holidays excluded?

Not automatically — holidays are country-specific. Count them separately and deduct from the result.

QIs Saturday ever a business day?

In some industries and countries yes, but the standard Mon–Fri convention applies here.

QHow long is '10 business days'?

Exactly two calendar weeks when no holidays intervene — fourteen calendar days.