Pregnancy calculator
Enter the first day of your last period or the date of conception to see your estimated due date, current week and check-up calendar.
Your check-up calendar
This is an estimate and does not replace a medical examination. The exact term is confirmed by ultrasound.
How is the due date calculated?
Pregnancy is counted from the first day of the last period and lasts on average 280 days (40 weeks) — Naegele’s rule. If your cycle is longer or shorter than 28 days, the date shifts accordingly. Only a few babies arrive exactly on the calculated day: birth between weeks 37 and 42 is considered normal.
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