Compute a year's rest days and actual working days: days off = weekly rest days × weeks per year + public holidays; working days = total days − days off.
Input Data
Results
At a glance:Annual days off combine weekly rest days across all weeks with public holidays; working days are the remainder of the year.
Formula
daysOff = weeklyRestDays × weeksPerYear + publicHolidays
workingDays = totalDays − daysOff
$$\\text{DaysOff} = r \\times w + h$$$$\\text{WorkingDays} = D - \\text{DaysOff}$$How to Use
- Enter weekly rest days and weeks per year.
- Enter public holidays and total days in the year.
- Review the days off and working days.
FAQ
How are annual days off and working days calculated?
It is a two-step logic. Step one, total rest days in the year = weekly rest days × weeks per year, plus public holidays. For example two rest days a week (Sat+Sun) over 52 weeks is 2 × 52 = 104 days, plus about 17 Hong Kong public holidays = 121 days off. Step two, working days = total days in the year − days off = 365 − 121 = 244. So in this setup you rest about 121 days and work about 244. You can adjust the parameters for your situation: one rest day a week, 1.5 days, your actual public-holiday count, or a leap year (366 days).
Why might the calculated days off differ from how it feels in practice?
This is a simplified model, so the result can differ from reality for a few reasons. First, overlap of public holidays with weekends: the calculator simply adds weekly rest days and public holidays, but when a public holiday falls on your usual Saturday or Sunday it only counts once, so the simple sum slightly overstates true days off. Second, substituted-holiday rules (when a statutory holiday clashes with Sunday, a day may be carried over) affect the real count. Third, it excludes personal leave — annual leave, sick leave, unpaid leave are not counted, so your actual rest days are more. Fourth, the year has about 52.14 weeks; using 52 is a tiny approximation. For a precise working calendar (payrolls, statutory hours) use the official holiday calendar and your company policy.
What is the annual days off calculation actually used for?
Knowing the working days in a year is useful well beyond curiosity. First, capacity and project scheduling: for a team or project manager, working days (× hours per day) give annual total hours to plan timelines and set realistic delivery dates, avoiding counting holidays as working time. Second, payroll and labour-cost: for daily or hourly pay, working days are the denominator for daily/hourly rates, annual labour cost, overtime bases and average daily pay (relevant to severance and annual-leave conversion). Third, personal time and financial planning: seeing your working vs rest days helps plan holidays, side jobs or study, and is key to estimating annual income if you are freelance or piece-rate. Fourth, production and operations: factories and shops schedule output, inventory and shifts from their operating days. In short, this simple count links 'time' to 'capacity, cost, revenue'. For formal pay or statutory use, apply the exact official calendar and labour rules; this tool is for quick estimation.
How many public holidays are there in Hong Kong a year, and is that the same as statutory holidays?
In Hong Kong, 'public holidays' and 'statutory holidays' are two different systems often confused. Public holidays, set by the General Holidays Ordinance, are about 17 a year (New Year, Lunar New Year, Ching Ming, Easter, Labour Day, Buddha's Birthday, Tuen Ng, HKSAR Establishment Day, the day following Mid-Autumn, National Day, Chung Yeung, Christmas and the first weekday after). Banks, schools, government and many 'bank-holiday/red-day' firms follow these. Statutory holidays, under the Employment Ordinance, are owed to all employees regardless of hours; historically 12 days, now being raised by legislation to eventually match the 17 public holidays. So whether you get 17 or fewer depends on whether your contract follows public holidays or statutory holidays — enter the actual figure your contract applies (commonly 12-17). If a holiday falls on your normal rest day, a substitution may apply, which this calculator does not handle. Holiday rules change with legislation, so check the Labour Department and the government's latest announcements.
How do leap years, single rest days or flexible hours affect the result?
All four parameters are adjustable. Leap year: change total days from 365 to 366 — days off are unchanged but working days rise by one (e.g. 244 → 245 under a two-day week). Single rest day or flexible hours: one rest day a week gives days off = 1 × 52 + 17 = 69, working days 296; 1.5 rest days (e.g. every other Saturday) gives 1.5 × 52 + 17 = 95 days off, 270 working days — so the weekly rest days matter most. Shift or irregular rest: use the average weekly rest days (e.g. 5 rest days per fortnight ≈ 2.5 per week). Weeks per year: the year is about 52.14 weeks; 52 is fine for estimation, 52.14 changes the result only minutely. This is a uniform-distribution simplification that ignores holiday/weekend overlaps, substitutions and personal leave; for a day-by-day working calendar use the official holiday calendar and company policy.
Content review: Calculatorism Finance Team. Results are for reference only; please refer to the relevant authorities for the official figures.