Working Days Calculator
Count Monday–Friday days and optionally skip listed holidays.
Add ISO holiday dates yourself. The tool does not ship a country holiday calendar.
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Input Parameters
Weekends are excluded. 0 custom holiday date(s) were applied.
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Calculation Formula & Methodology
All arithmetic is processed locally in your browser session using IEEE 754 precision with boundary checks.
Worked example
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Frequently Asked Questions
Which holidays are excluded?
Only the dates you paste. Public holidays differ by country, state and employer, so they stay configurable.
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