预产期计算器
根据末次月经或受孕日期计算预产期、孕周和孕期
Due date = LMP + 280 days (Naegele's rule)
This calculator provides estimates only. Actual due dates and milestones should be confirmed with a healthcare professional. Only about 5% of babies are born on their exact due date.
Pregnancy Due Date Calculator
Calculate your pregnancy due date, current week, and trimester based on last menstrual period (LMP) or conception date. Includes a week-by-week milestone timeline.
Pregnancy timeline overview
First trimester (Weeks 1–13)
Organ formation begins. Morning sickness common weeks 6–12. First ultrasound typically at 8–12 weeks.
Second trimester (Weeks 14–27)
Baby movements felt (quickening) around week 18–22. Anatomy scan ultrasound at week 20.
Third trimester (Weeks 28–40)
Rapid weight gain. Baby positions for birth. Full term at 39–40 weeks.
Due date accuracy
Only ~4% of babies arrive on their exact due date. Normal delivery is any time between 37–42 weeks.
继续探索
您可能喜欢的其他 Health Tools…
BMI计算器
根据身高体重计算体质指数并查看体重分类
卡路里计算器
根据年龄、体重、身高和活动水平计算每日热量需求
基础代谢率（BMR）计算器
使用 Mifflin-St Jeor、Harris-Benedict 或 Katch-McArdle 公式计算基础代谢率，并按活动强度估算每日 TDEE
体脂率计算器
使用美国海军方法计算体脂百分比——支持公制和英制，并分解脂肪量与瘦体重
血液酒精浓度(BAC)计算器
使用 Widmark 公式估算血液酒精浓度 — 基于体重、性别、饮酒量和经过时间
预产期计算器
使用 Naegele 法则计算预产期 — 从末次月经或受孕日起的当前孕周、三月期和剩余天数
受孕计算器
根据末次月经日和周期长度估算排卵日、易孕期和最可能受孕窗口
睡眠周期计算器
根据90分钟睡眠周期找到最佳起床或入睡时间