Have you recently found out that you are pregnant? Congratulations! Our pregnancy due date calculator will help to give you an idea of when you might expect your baby.

You’re about to embark on an amazing journey. And one of the first things you’ll want to know is when your baby might be due.

Your due date is often referred to as your ‘estimated date of delivery (EDD)‘, every pregnancy is different and this is just an estimate.

How do I calculate when my baby is due?

It’s really impossible to say exactly when your baby might be born.

But a pregnancy due date calculator will help to give you a pretty good idea, certainly within a few weeks, so that you can start to prepare for the big day!

Of course, even with a very accurate due date, baby may arrive earlier or later than the date. But knowing roughly when your baby is due means you can start planning your parental leave, baby scans and begin thinking about pre and post-natal health and nutrition, etc.

Let’s give it a go now…

Kiwi Families Pregnancy Due Date Calculator

To use this due date calculator, you need to enter the day that your last period started. Don’t worry too much if you can’t remember exactly – just put the most likely date.

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Enter the date of the first day of your last menstrual period (LMP):



Probable date you conceived:


Baby age as of today:


First heartbeats heard with a Doppler:


(11 to 12 weeks)

Best date range for NT scan:


(12 weeks 3 days to 13 weeks 3 days)

Best date range for routine ultrasound:


(18 to 20 weeks)

Your baby's birthstone is:


Your baby's birthflower is:



Sign up now for our 52 weeks of pregnancy

Now that you know your approximate due date, sign up for our 52 weeks of pregnancy. Developed with New Zealand midwives 52 weeks of pregnancy is a weekly email packed full of advice for you and your baby, including choosing a carer, relationship advice, health and nutrition, and the different stages of baby growth.

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This information was compiled by the Kiwi Families team.

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Audra Bourn

Hi, my name is Audra.
My boyfriend and I last had intercourse in November (unsure of exact day) I had a cycle in December but it was light and only lasted three days. It is now January and I am three days late and I believe I’m experiencing early pregnancy symptoms. I was wondering if I could be pregnant even though we had intercourse about a month in a half to two months ago. I’m new to this so any help would be great.


Hi Audra, you can’t get your period and be pregnant at the same time, so it seems unlikely. Some women do, however, get light spotting during pregnancy, which some mistake as their period. I’d suggest you try out our free online pregnancy test http://www.kiwifamilies.co.nz/ articles/free-online-pregnancy-test/, and perhaps order a pregnancy test kit if you’re still concerned in a few days. — Jarrod

Tabie Wilbourn-Little

So I am 43 had tubes 9 1/2 years ago have all the pregnancy symptoms took test neg, haven’t had or seen my period sence Sept 16,2017. I have flutters or butterflies very bloated and tummy tender any suggestions.


Hi Tabie. It would be difficult for us to tell, as everyone’s body is different. I’d suggest you try out our free online pregnancy test http://www.kiwifamilies.co.nz/articles/free-online-pregnancy-test/, and perhaps see your doctor if you’re still concerned. — Jarrod

Rayleen Horsey

Hi I have 5 children I have never been late before with my period I am 10 days late I have done several home test all negative but I never got a positive one with my other children till i was 3 months I have all the symptoms of pregnancy but I started to spot bright red only when I wiped I noticed it I never had it with my other children
Could I be pregnant

Mis Wright

I have the symptoms but no positive test and 1 weeks 3 days late on period am i pregnant help


Hi there, you can certainly have many of the symptoms without being pregnant. If you wait 1 week after your last period was due, and take the test first thing in the morning when your urine is more concentrated, most tests are said to be 99% accurate. So you should get an accurate result. You can always wait another week and test again if you think the result was inconclusive though. — Jarrod


Hi I have a big concern OK…the last time I saw my period was 25 of August 2015…. I had unprotected sex on the 9 of September and I had to take a morning after pill later down in the month I did really had any appetite and my period was late on October 4 and 12 I had light spotting that last for couple hours nothing much that I would see but when I go to the bathroom and pee then wipe I would see the blood….. my period is now 23 days late I had cramp, different craving,tender… Read more »


18 days before me & my hubby had unprotected sss. Now I missed my period 13 days. I chedked 3 urine Test & 2 Blood Test.. all rea negative. We are eagarly waiting to gey baby. so when can i take the other Test. So , kindly please help me


I know I had sex on the 25th of April, n I last got my period around 10th of April.. How do I tell how far I am when should I go for a pregnancy ultrasound?


I’ve got all symptoms of pregnancy took a clear blue test came back positive.. It just doesn’t feel real & i need abit of advice pls n thank u x


Hi my name is Charlotte last month I have my light period this month nothing… I do feel cramps, pee a lot and feeling tired. We dd use a condom but it break so does that mean I could be pregnant

Cherrii Lovee

Hi my name is Erika.. I am against abortions but it was needed in March 10.2015 RIP my baby 🙁 then my last period was 4/12/15 had sex with my husband within the 5days after that period.. I waited till 5/17/15 and took a pregnancy test came positive with faded line and then 5/20/15 I took another one and it the same positive wit a faint line. On 5/21/15 I started bleeding and I don’t know what is going on.. Now it is 5/25/15 do u think i can b pregnant??

Rochelle Gribble

Hi Erika, Sounds like you’ve been having a tough time. Anything is possible so if you are concerned, the best thing to do is visit your GP. Good luck!

akila suresh

my last period was march 3. my period was delayed one day. the 2nd day(last saturday) i have some bleeding like watery pink and brown color. in intervals of time i have heavy and light bleeding. my doctor said to take pregnancy test wait upto 9th april they did not take pregnancy.my bleeding was stopped in monday aftnun . i have all pregnancy symptoms now i am preganant or not?


hi! in February i got my periods on the 8th and they were normal. on the 23th of feb i had unprotected sex den i took morning after pills the next day the 24th. then on Saturday march 8th while having protected sex i started my periods then when i woke up in the morning, my pad was empty and today is the 3rd day nothing is happening, except for the pains in bladder like i`m going to get my periods and my breasts are itching. could i be pregnant?


i have had a tubelagation 9 yrs ago but now im late and having all the symtoms of a pregnancy and no one to talk to what do i do

Rochelle Gribble

Hi Angela,

Tubal Ligation does have a small risk of failure – see our information here:http://www.kiwifamilies.co.nz/articles/tubal-ligation-female-sterilisation/ so if you do think you are pregnant, the best thing to do is talk to your GP or local Family Planning clinic.

Good luck,



hi i m chaithanya my last period was on 11 of nov but still nw i did nt get my periods for this month, and i tested in pragence tester also its showing negative, i dono wat to do, plz solve me

Melanie Wiki

Hi, maybe visit your doctor and ask for a blood test, the results are more accurate. goodluck 🙂


13 february!!! 

Rochelle Gribble



thank you.we are very excited… little one was unexpected but it almost makes it a little more special

Rochelle Gribble

🙂 That’s great! 


 Estimated Due Date: 3 Nov 2012 !!!!!!

Rochelle Gribble

Yah!! Congratulations!!!



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