Trying to Conceive? Here’s a Fantastic Pregnancy Calculator

Whether you’re trying to conceive or you’ve already got good news, the early stages of pregnancy carry plenty of similarities. First and most important: congratulations, you’re (going to be) pregnant! Kiss your partner (or maybe more), dream longingly of the celebratory champagne that will be barred to you for the foreseeable future, and then it’s time to start figuring out the details. The questions for a future mom tend to stay the same no matter the stage. One of the first things you’ll want to figure out is: “When will my baby be due?”

Cute little baby with a fluffy blanket and crotchet bunny ears.

There are a few different methods to figure out the answer. We’re here to give you a quick and easy way to determine your estimated due date (EDD). You can easily use a pregnancy calculator to figure out your estimated due date, as long as you remember the first day of your last period or conception date. That method works for most people, though not for the longest human gestational period ever recorded. Beulah Hunter, apparently made of stronger stuff than most mortals, was pregnant for no less than EIGHTEEN months. Talk about girl power. And she got off lucky when compared to other mammals! African bush elephants are pregnant for an average of two years. If I had to stay pregnant for even one extra month, I’d have leveled my entire city. Count the blessings of modern medicine!

Pregnancy Calculator



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



Probable date of conception:


Foetal Age Today:


Best date range for NT scan:


(12 weeks 3 days to 13 weeks 3 days)

Morphology Scan Date:


(19 weeks)

First Heart Tones by Doppler:


(11 to 12 weeks)

Best time to evaluate cervical length in patient with risk factors:


Best time for routine anatomy ultrasound:


(18 to 20 weeks)

Estimated Due Date:



If you can’t remember exactly when your period started, your best guess is close enough to narrow down your EDD. Even if you know the exact date of conception, your estimated due date comes with some leeway. The majority of babies, foreshadowing how they will grow up to make us late, rarely keep to our expected schedules. The majority of pregnant mamas—about 80%—deliver between 37 and 42 weeks, and approximately 11% deliver prematurely. That means 9% of pregnancies are overdue. According to the BBC, only 4 percent of babies are born on their estimated due dates! Almost all of them will have you tearing your hair out with an unexpected trip to a delivery room.

Pregnant women with heart over belly

Consider this blog post a sign not to buy expensive birthstone jewelry just yet!

Once you’ve calculated your due date, the possibilities start opening up. Trying to conceive and have a baby comes with parties and baby showers to take some of the load off, time off work and project prioritization, and the possibility of family members crawling out of the woodwork to offer you advice. Or maybe, hopefully, just some food.

Whether you’re a first-time mom or a veteran, trying to conceive or pleasantly surprised, getting pregnant means major life changes. There’s no single set experience. Moms come in all shapes, sizes, ages, and more. You owe it to yourself to be as prepared as you can. With your EDD in your mind, you’re ready to start making the changes you and your baby will need.

Woman holding a pregnancy test.

What do you think? Chime in!