Business Days Calculator
Count working days between two dates or add workdays to a date, skipping your chosen weekend and any public holidays you paste in for your country or region.
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About Business Days Calculator
Counting working days between two dates, or adding working days to one, so that a deadline lands on a day people are actually at work. Counting calendar days and then explaining why a delivery slipped is the alternative. Free, and it opens straight away with no account. The arithmetic happens in this tab, not on a server.
How to use Business Days Calculator
- Choose the operationCount the working days between two dates, or add a number of working days to a start date.
- Set the datesSaturdays and Sundays are dropped from the count automatically, so only working days remain.
- List your holidaysPublic holidays differ by country and region, so none are assumed: paste the dates that apply, one per line, and they are skipped.
Why working days and calendar days diverge so fast
A week has five working days out of seven, so a calendar month of roughly thirty days contains around twenty-two. Over a quarter the gap is close to a month. A deadline quoted in working days and diarised in calendar days is therefore wrong by a widening margin, which is why contracts specify which they mean.
What it does not do
- Public holidays are not included, because there is no universal set of them. A national calendar is the thing to check against.
- A Monday-to-Friday week is assumed, which does not hold everywhere — several countries treat Friday or Sunday as part of the weekend.
- Half-days, shutdowns and local observances are invisible to it.
Business Days Calculator: questions people ask
- Does this include public holidays?
- Only the ones you list. Holidays vary by country, region and year, so none are built in; paste the dates that apply in the holidays box and they are left out of the count.
- Is the start date counted?
- Yes, by default both the start and the end date are counted when they are working days. Untick either one to count days elapsed instead, and check a short known example if the boundary matters for a contract.
- How do I count business days for the UK or Australia?
- Paste that region's public holidays into the holidays box, one date per line in YYYY-MM-DD form, and keep the Saturday and Sunday weekend. Nothing is built in for any country, so a state holiday such as one in NSW or Victoria counts only if you list it. A Friday and Saturday weekend is also available for regions that use one.
Questions about ToolsVerse itself — privacy, cost, what happens to your files — are answered in the frequently asked questions.
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