Retro Conception Birthday Calculator

    Did you ever wonder when the baby was conceived? Who the father is? 

    This retrospective retro birthday conception and pregnancy calculator allows you to calculate the exact day the couple made love based on the weeks gestation and the delivery date. Just enter the actual birthday of the baby and the weeks of pregnancy and we will automatically calculate the exact dates when sex happened and when the baby was conceived.

    You can also try our scientifically-tested due date calculator.