Pregnancy Due Date Calculator

As soon as you find out you are pregnant the first question on your mind could well be – when am I due?

Your healthcare provider will help you determine your expected delivery date (EDD) on your first visit.

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.

We have two calculators below depending on how much information you have:

 

Baby’s Due Date [calculator 1]

Simply enter the date of the first day of your last menstrual period and the calculator will tell you the approximate due date of your baby’s birth.

 

Select the first day of your last period.

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Due date

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Estimated date of ovulation

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Beginning of second trimester

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Beginning of third trimester

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Remember that the normal range of time between conception and birth can vary from 38 weeks to 42 weeks, depending on your menstrual cycle and the date of your last period.

Ultrasound scanning can provide a more accurate determination of your baby’s due date, so ask your doctor when you have your first ultrasound.

 

Baby’s Due Date [calculator 2] 

Enter the information into the boxes and hit the ‘Calculate’ button

 

Last Menstrual Period:        
                              (MM/DD/YYYY format)

Average Length of Cycles:      (22 to 45)
                              (defaults to 28)

Average Luteal Phase Length:   (9 to 16)
                              (defaults to 14)

   Estimated Conception:         
                 
        

        Estimated Due Date:             
                   
        

Estimated Fetal Age:

 

 

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