Working Days Calculator
Count working days between two dates, excluding weekends and holidays.
Assumptions used in this calculation
- Weekends: Saturday and Sunday are excluded by default; add specific holiday dates to exclude those too.
About this calculator
Estimating a delivery date, project deadline, or SLA target that's defined in business days rather than calendar days means manually crossing off every Saturday and Sunday, and any public holidays, in the range, which gets error-prone fast over a multi-week span. This calculator counts the working days between two dates by starting from the total calendar days and subtracting weekend days automatically, with the option to also list specific holiday dates to exclude from the count. It's built for situations like estimating when a "5 business day" shipment will arrive, calculating a legal or contractual notice period specified in working days, or planning project timelines around weekends and known holidays, without manually counting off a calendar square by square.
Worked example
January 2026
Result: 22 working days
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