📆

Date Add & Subtract Calculator

Add or subtract days, weeks, months or years from any date

Instructions

날짜 계산기 사용 설명



기능 소개


임의의 날짜에서 "30일 후", "3개월 전", "1년 후" 같은 날짜를 계산합니다. 계약 만료일, 청구일, 휴가 일수, 프로젝트 마일스톤에 자주 사용됩니다.

사용 방법


  • 기준 날짜 선택 (기본값 오늘)

  • "이후" 또는 "이전"을 선택하고 수량을 입력한 뒤 단위(일 / 주 / 개월 / 년) 선택

  • 아래 빠른 버튼(+30일, +3개월 등)을 바로 눌러도 됩니다

  • 결과 영역에 결과 날짜, 요일, 두 날짜의 차이 일수가 표시됩니다


    • 주의 사항


  • 월 단위 계산 시 대상 월에 해당 일자가 없으면 자동으로 그 달의 마지막 날로 처리됩니다. 예: 1월 31일 + 1개월 = 2월 28일(윤년 29일), 결과 아래에 안내가 표시됩니다

  • 결과는 로컬 시간대 기준으로 계산되어 시간대 차이로 하루가 어긋나지 않습니다

  • 모든 계산은 브라우저에서 완료되며 데이터를 업로드하지 않습니다

    • ❓ FAQ

    Why is 31 January plus one month 28 February?

    Because February has no 31st. The tool clamps the day to the last day of the target month and clearly notes below the result that this adjustment was made.

    Does this count calendar days or working days?

    Calendar days, including weekends and holidays. If you only want working days, use the working day calculator.

    Do leap years or daylight saving time affect the result?

    Leap years are handled correctly according to the calendar. Results are based on date objects in your local time zone, so a daylight saving switch will not shift the result by a day.

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