Baby gender predictor tests to try at home

Baby gender predictor tests can be fun to try yourself at home

Baby gender predictor illustrated by Image of a pregnant tummy with blue and pink post its no it
(Image credit: Getty / Future)

Baby gender predictor tests are a fun way to try and guess if you are having a boy or a girl before your 20-week scan.

While the pregnancy scan (opens in new tab) that is carried out when you're between 18 and 21 weeks pregnant (opens in new tab) is your first official chance to find out the sex of your baby, there are actually quite a few ways to predict the gender of your baby before you find out from the sonographer.

Ranging from the Chinese birth chart (opens in new tab) - an ancient method of baby gender prediction that dates back to the 13th century - to more modern baby gender predictors tests - such as nub theory (opens in new tab), skull theory (opens in new tab), and Ramzi theory (opens in new tab) these methods are meant to be fun rather than factual.

After all, guessing the gender of your baby and considering old wives' tales about pregnancy (opens in new tab) are an enjoyable and exciting part of expecting – even if you decide to keep the sex a secret until the birth!

Baby gender predictor tests to try at home

Some of these baby gender predictor tests are based on scans but others are based on old superstitions. If you have a hunch about the sex of your child, try a few of these different baby gender prediction methods and see if the answers match up!

Nub Theory

One of the most popular (and some may argue most accurate) methods of baby gender prediction in the early stages of pregnancy is the Nub Theory test.

You can try the Nub Theory for yourself once you have your 12-week ultrasound picture. The theory is based on the fact that between the stages of 11-13 weeks, all babies have a ‘nub’ between their legs. This is called the genital tubercle. According to this baby gender predictor test, the angle of the nub indicates whether you are having a boy or a girl.

Find out how to try the Nub Theory at home here.

A pregnant woman holding her ultrasound scan result trying to use it for baby gender predictor tests at home.

(Credit: Getty)

Chinese birth chart baby gender predictor

While the exact date that this baby gender prediction method was first used is not known, it is thought that the ancient art of predicting a baby's gender using a Chinese birth chart dates back to at least the 13th century.

According to Chinese Astrology (opens in new tab), the Chinese birth predictor chart was first used during the Qing Dynasty between 1644 - 1911 AD. 'It is based on two elements: the mother-to-be's lunar conception month and Chinese lunar age when the baby is conceived.' The Chinese birth chart is actually much simpler to use than it sounds. You just have to know how old you were when you conceived and what month your baby was conceived in.

See the Chinese birth chart (opens in new tab) and work out if you will have a boy or girl

Predict your baby's gender using over 30 different old wives tales

For fun baby gender predictor tests that are less to do with facts and more to do with feelings, look no further than our list of popular pregnancy superstitions that many believe will reveal if you are going to have a boy or girl.

Ranging from well-known indicators such as how high your bump sits to less popular suspicions such as how you hold a cup of tea (yes, really) we've picked out 36 of the best old wives' tales about pregnancy (opens in new tab) here. It's up to you to decide how accurate they are, but at least you and your friends and family might have a good laugh in the process! Plus, they make quite fun baby shower games (opens in new tab) too, if everyone is making a guess about the baby's gender before the birth.

Ramzi Theory

Also known as Ramzi’s method, this baby gender predictor claims to be able to determine if your baby is a boy or girl by as early as six weeks. For this method of baby gender prediction you use a 2D ultrasound picture to see which side the placenta is on. Depending on whether the placenta is on the left or the right will suggest what sex your baby is.

Learn more and see how to try the Ramzi Theory (opens in new tab)

Skull Theory

Similar to the Ramzi theory, the Skull Theory for baby gender prediction requires a closer look at one of your scan photos to try and determine if you are having a boy or girl.

For this baby gender predictor test you will need your 12-week scan photo. The idea behind the theory is that there are cranial differences between men and women. It is though that you can start to see these in the womb, as early as 3 months into a pregnancy.

Netmums report (opens in new tab) that 92% of mums found the Skull Theory accurate at predicting the sex of their baby. See how to try it for yourself and learn more about the Skull Theory (opens in new tab) here.

Using your linea nigra as a baby gender predictor

Linea nigra (opens in new tab) is Latin for 'black line' and is a line that may appear on your stomach during pregnancy. It is very common for women to develop this vertical line when they're expecting and, as the NHS (opens in new tab) advises, it's nothing to worry about: 'This is normal skin pigmentation and nothing to worry about. It will probably vanish a few months after your baby's born.'

Some people think that if you develop a linea nigra, it can help you predict your baby's gender. Apparently, if it extends from your navel downwards towards your pubic bone then you’re more likely to have a girl. However, if your linea nigra is heading ‘north’ – from your navel up towards your head – then you are more likely to have a boy.

Take our boy or girl quiz

If you're looking for a fun baby gender predictor test that doesn't involve analysing ultrasound scans or knowing exactly when you conceived, then take our Am I Having A Boy or Girl Quiz (opens in new tab).

It's a simple and lighthearted quiz where your answers will help determine if you might be more likely to have a boy or a girl. Even if you're keeping your baby's gender a secret until the birth, it might be fun to aid your guesses and you never know, it might help with choosing baby names (opens in new tab)!

You might also like: 

Gender selection: how to conceive a boy or a girl (opens in new tab)
Due date to predict baby's birthday (opens in new tab)
How your baby's birth month affects their life (opens in new tab)

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