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Business Days Calculator

Count Monday-to-Friday dates in a range and optionally exclude holidays.

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Adjust the values below to get a clear estimate.

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Inclusive weekday iteration

The calculator visits each UTC calendar day from the earlier endpoint through the later endpoint. Saturdays, Sundays, and entered holiday dates are skipped; reversing the endpoints reverses the sign.

Count dates where weekday ∈ Monday–Friday and date ∉ entered holidays

Worked example

A two-week working interval

Inputs: start: 2026-10-05 · end: 2026-10-16 · holidays: 2026-10-12

Illustrative result: 9 business days

There are ten weekdays in the inclusive range; excluding the one supplied holiday leaves nine.

Date Difference CalculatorMeasure the calendar-day distance between two dates in either order.Days Until Date CalculatorSee how many calendar days remain until a date or have passed since it.Time Duration CalculatorFind elapsed hours and minutes between two times on a 24-hour clock.
Good to know

Frequently asked questions

Are public holidays automatically included?

No. Only holiday dates typed into the optional field are excluded.

Does reversing the dates change the count?

It keeps the weekday distance and returns a negative count to show the reversed direction.