出産予定日計算機
Pregnancy Due Date Calculator Estimate your baby’s due date instantly from your last menstrual period, conception date, or IVF transfer date. Get your current gestational age, trimester, progress toward 40 weeks, and a complete timeline of key prenatal milestones and appointment windows — all calculated in your browser with no data sent to a server. How to Use Choose a calculation method – Last Menstrual Period (LMP), conception date, or IVF transfer date. Enter the relevant date – the form adapts to your selection and only shows inputs you need. Adjust your cycle length if needed – the default 28-day cycle suits most people; longer or shorter cycles shift the ...
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