Safe and Fertile Period Calculator

The safe days and fertile days calculator helps you to calculate the safe or infertile period, as well as the most fertile period, for conception between a woman’s last menstrual cycles. This is to avoid unplanned pregnancies and also to know the days when pregnancy is most likely.

First day of your last menstrual period
Cycle Length
Menstruation duration
Please, Enter all values correctly.
01 - Menstruation days
02 - Conventionally safe days
03 - Ovulation
04 - Favorable day for conceiving a girl
05 - Favorable day for conceiving a boy
06 - Safe days to conceive
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