The National Maternity Hospital

Pregnancy Due Date Calculator

This due date calculator gives an estimated date for your baby’s arrival. Your due date is an estimate. It will be confirmed when you attend your booking appointment with your midwife or consultant.

Enter a few details below to estimate your baby’s due date.

This is the number of days from the first day of one period to the first day of the next. Most cycles are between 22 and 44 days. Leave as 28 if you’re unsure.

Next Steps

Your due date is an estimate. 
When you’re ready, you can book your maternity appointment with us at the National Maternity Hospital, where your midwife or doctor will confirm your dates
and start your care.

Book Maternity Appointment
Learn About Maternity Care Options