Pregnancy Due Date Calculator



To work out your due date please select the
first day of your last period.



Calculate Pregnancy Due Date

Find out your due date with our pregnancy calculator, plus get all the info you need about your developing baby and see how big your baby is right now with our weekly pregnancy guide and sign up to our email newsletter for week by week pregnancy and new baby emails. 

Our calculator uses the method most healthcare providers will use to determine your expected delivery date (EDD), once you've confirmed your pregnancy 

Your EDD is 40 weeks from the first day of your last period, although your baby was probably conceived about two weeks after that.

If your baby arrives on your EDD, your baby is only 38 weeks old - this is because your period and ovulation are counted as the first 2 weeks of pregnancy.

Your calculated due date is only an estimate - most babies are born between 38 -42 weeks.

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