Join our newsletter (learn more)
Login with

Thank you for logging in! Would you like to go to your dashboard or continue?

Pregnancy Due Date Calculator

One of the first questions most women want to know when they find out they’re expecting is “how many weeks pregnant am I?”

A pregnancy due date calculator will use the date of your last menstrual period and the usual length of your cycle to calculate your pregnancy due date, or the date you are 40 weeks pregnant. However, the pregnancy due date calculator still doesn’t answer the question, “how many weeks pregnant am I?”

For this you need to count back from 40 weeks to today’s date, or use a week by week Pregnancy Calculator. “How many weeks pregnant am I?” Now you know.

Use our Pregnancy Calculator to find out your Estimated Due Date (EDD) which is calculated using the first day of your Last Menstrual Period (LMP). Our Pregnancy Calculator below will give you a guide to your due date by calculating 40 weeks gestation from the first day of your last period.

Calculate Your Due Date

Select the date of the first day of your last period:

Select the number of days in your menstrual

If your typical menstrual cycle was not 28 days, this may be taken into account when calculating your dates although it will only alter your due date slightly – you can experiment with this above.

This Pregnancy Calculator offers a guide only. Please consult with your health professional to find your exact due date as there may be other factors which affect this. Blood tests and ultrasounds during your pregnancy will give you further indication of your estimated due date. Please also bare in mind that the due date given is an estimate only, not too many babies are born on their actual due date. They can be born up to two weeks prior and after your estimated due date.

Want to know more about your pregnancy stages? Read more in our Week by Week Pregnancy Guide.

Learn everything you need to know about pregnancy, in our special Pregnancy Page!

Need to find that perfect & unique baby name with meaning? Why not check our comprehensive Baby Name Finder!

Join our Monthly Newsletter to get our latest pregnancy, baby and parenting articles, new competitions, recipes, tips and many more!

Mum Zone wishes you all the very best with your pregnancy, and we hope that you enjoy this Pregnancy Calculator!