AlphaBiolabs Pregnancy Calculator

Our pregnancy calculator estimates your due date based on the date of your last period. Most women ovulate about 2 weeks after the first day of their period, and conceive shortly afterwards.

The calculations that are provided are estimates based on averages. Most pregnancies last between 37 and 42 weeks. It’s impossible to say for sure exactly when your baby will arrive. Fewer than 4% of births occur on the exact due date, 60% occur within a week of the due date, and almost 90% occur within 2 weeks of the due date.