Working Days Calculator

What this tool does

The Working Days Calculator counts how many business days fall between two dates. It excludes Saturdays and Sundays automatically, and lets you add your own list of holidays so company shutdowns and public holidays are taken out too. Alongside the working-day total it shows the total number of calendar days, the number of weekend days, and how many of your holidays were actually excluded — so the figures always reconcile.

It loads ready to use with a sample date range, so you can see how the breakdown behaves before entering your own dates.

When you would use it

Anyone who plans around a five-day week reaches for a working-days count regularly. Project managers use it to turn a deadline into a realistic number of working sessions. HR teams and employees use it to work out how many days of leave a holiday request actually consumes — booking the 24th to the 31st sounds like eight days, but a working-days count shows how many are genuine paid leave once the weekend and any public holidays are removed.

Freelancers and agencies use it to scope effort and quote accurately: a job due “in three weeks” might only contain thirteen or fourteen working days once weekends and a holiday are stripped out. Finance and operations staff use it for service-level agreements and invoice terms — “net 30 working days” is a very different promise from “net 30 calendar days”. Legal and administrative deadlines are also frequently expressed in business days, so a quick, accurate count avoids missed dates.

How to use it

1. Set the start date and end date of the period you want to measure. Both dates are included in the count.
2. Add any holidays under Custom holidays to exclude. Pick a date and press Add holiday. Repeat for every public holiday or company day off in the range.
3. Read the four result cards: working days, total days, weekend days, and holidays excluded.
4. Use Copy summary to put a sentence describing the result on your clipboard, or Reset to start again.

How it works

The tool steps through every single calendar date between your two dates. For each date it checks the day of the week: Saturdays and Sundays are tallied as weekend days. Every other date is a candidate working day — unless its date matches one on your holiday list, in which case it is counted as an excluded holiday instead. Because every date lands in exactly one bucket, the three counts always sum to the total span.

A holiday only affects the result when it falls on a weekday within the range. A holiday on a Saturday changes nothing, because that day was never going to be counted as a working day. A holiday outside your date range is simply ignored. This is also why the order of the start and end dates does not matter — the tool always measures from the earlier date to the later one.

Tips

If your week is not the standard Monday-to-Friday, treat the result as a starting point and adjust manually. For a recurring schedule, save your holiday dates somewhere reusable, since the list resets when you reload. When counting leave, remember that a holiday already inside your booked range means one fewer day deducted from your allowance — that is exactly what the holidays excluded figure tells you. For the plain gap between two dates, or a calendar breakdown in years and months, see the date difference calculator. To find your exact age in days, the age calculator does that.

Privacy

Everything happens in your browser. The dates and holidays you enter are never uploaded, never stored, and never logged. Close the tab and the data is gone, so you can plan schedules and leave with confidence.