How to Calculate Working Days Between Two Dates
Working days (business days) are weekdays only — Monday through Friday. Calculating working days is essential for estimating project timelines, calculating notice periods, determining payment due dates, and planning delivery schedules. Simply counting calendar days would overestimate the time available for work.
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Formula
Work Days Calculator
Calculate the number of working days between two dates, excluding weekends.
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Worked Example
Given:
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FAQs
Does this calculator account for public holidays?
No — public holidays vary by country, region, and year, making them impossible to include universally. This calculator only excludes weekends. For project management, subtract your expected public holidays from the working days result manually.
What is a business day for banking purposes?
Banks define business days as weekdays excluding public holidays. A payment processed on Friday after the cut-off time, or on a weekend, will typically be processed on the next business day (usually Monday), which may be Tuesday if Monday is a public holiday.
How do I add a specific number of working days to a date?
To find a date that is N working days from a start date, count forward N weekdays. Skip any Saturdays and Sundays encountered. This calculator counts existing working days in a range; for adding working days to a date, use a dedicated business date calculator.