출산 예정일 계산기
마지막 생리 시작일(LMP)을 기준으로 출산 예정일을 추정합니다. 네겔레 공식 사용: LMP + 280일.
출산 예정일
주
현재 주수
w d
남은 일수
삼분기
추정 수정일
이 계산기는 네겔레 공식(LMP + 280일)을 사용합니다. 실제 출산일은 다를 수 있으므로 정확한 예측은 의료 전문가와 상담하시기 바랍니다.
Frequently Asked Questions
How is a pregnancy due date calculated?
The due date is calculated by adding 280 days (40 weeks) to the first day of the last menstrual period (LMP). This is known as Naegele's rule. Only about 5% of babies are born exactly on their due date; most arrive within two weeks before or after.
What are the three trimesters of pregnancy?
The first trimester spans weeks 1–12, the second trimester covers weeks 13–26, and the third trimester is weeks 27–40. Each trimester has distinct developmental milestones and different prenatal care recommendations.
How accurate is a due date calculator?
A due date based on LMP is an estimate. Only 4–5% of babies arrive on the exact due date. An ultrasound in the first trimester can provide a more accurate estimate, typically within 5–7 days. About 80% of babies are born between weeks 38 and 42.