Business day calculator

N business days out · business days between · holidays and substitutes · the dropped days listed

영업일 계산

주말과 공휴일을 뺀 영업일을 셉니다. 어떤 날을 뺐는지 보여 줍니다

시작일
영업일 7일
2026년 9월 1일 (화)
영업일
7일
실제 걸리는 날
9일
쉬는 날
2일
8/29토요일
8/30일요일
쉬는 날을 아래에 모두 적었습니다 — 확인해 보세요.

Counts business days with weekends and Korean public holidays removed. It shows every day it dropped and why, so you can check the answer yourself.

How to use it

  1. Pick the start date
  2. Set a number of business days, or pick an end date
  3. Say whether Saturdays are working days
  4. Check the result against the list of days it skipped

Common questions

Why not just skip weekends?
That does not match reality. A deadline like “within 7 business days” only lands on the right date once public holidays and substitute holidays are taken out too. Korean Lunar New Year or Chuseok pushes it back by days.
Why does it list the days it removed?
Handing back a date alone leaves you no way to check it. Every removed day is listed with its reason, so if your company’s rules differ you see it at once.
Does it cover every year?
Korean Lunar New Year, Chuseok and Buddha’s Birthday follow the lunar calendar, so their solar dates change every year and cannot be derived by calculation. For a year that is not in the table it says so — it never quietly hands back a wrong date.
My company works Saturdays.
Turn on “Saturdays count as business days” and they are included.
Does the start day count as one?
By default counting begins the next day. Some rules include the start day, so it is offered as an option.

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