Can Astrology Determine a Baby’s Gender?

Predicting a baby’s gender before birth has long fascinated expecting parents. While modern medical technology like ultrasounds can provide a good indication of the baby’s sex, some parents look to more mystical methods like astrology for clues.

But can the zodiac really determine if you’re having a boy or a girl? Let’s take a closer look.

The History of Astrology and Gender Prediction

Astrologers have been making predictions about all aspects of life, including the gender of unborn children, for thousands of years. Ancient cultures like the Babylonians, Egyptians, and Greeks used astrology and the positions of the planets to forecast whether a baby would be a boy or a girl.

Certain astrological factors have traditionally been associated with one gender or the other. For example:

  • Mars was linked to masculinity and vitality, so its placement in the birth chart was thought to indicate a boy.
  • Venus was considered feminine, so its position pointed to a girl.
  • Jupiter, Saturn, and the Moon were also used for gender divination in various cultures.

So the history is long, but is there any validity to it?

Examining the Astrological Gender Theories

There are a few main astrological theories about how the planets in a birth chart may determine the sex of a baby:

Planetary Polarities

Some astrologers look at the dominant “polarity” in the chart. The moon and Venus are considered feminine or “yin” energies, while the sun and Mars are masculine or “yang” forces. If the yin planets outweigh the yang in the chart, the theory says you’ll have a girl, and vice versa.

House Positions

The houses in a birth chart deal with different life areas. The 5th house governs children, while the 7th house rules partnerships and relationships. One theory says a female planet (moon/Venus) in the 5th or male planet (sun/Mars) in the 7th predicts a girl, while the opposite points to a boy.

Aspects to the Ascendant

The ascendant or rising sign reflects the baby’s emerging personality. One system says feminine planet aspects to the ascendant mean a girl, while masculine planet aspects indicate a boy.

Moon Phase Theory

The moon’s phase at birth may also get consideration. A full moon supposedly indicates a girl, while a new moon favors a boy.

So in various ways, astrologers look at the yin/yang balance, planet and house placements, aspects, and moon phases when attempting to determine gender.

Is the Astrological Approach Reliable?

Unfortunately, there is no scientific evidence that astrological methods can accurately predict a baby’s sex most of the time.

One research study had astrologers predict the gender of over 100 births using their various techniques. Their success rate was no better than random chance. Other analyses of astrological birth charts have found similar results – the predictions are no more accurate than flipping a coin.

There are a few reasons why astrology falls short:

  • Complexity of birth charts – Each chart contains so many variables that there are often contradictory signals. Is it the sun in the 7th or Venus in the 5th that matters more? Even astrologers can’t agree.
  • Lack of consistent rules – There are many competing theories, not one standardized, proven method. Different astrologers make different judgment calls.
  • Confirmation bias – Some astrologers remember the hits and discount the misses. The hits stand out, seeming to confirm astrology works.

While astrology can be fun, there’s no solid proof it reveals a baby’s gender from the birth chart. Ultrasounds and medical tests are much more definitive. That said, even without astrology, the excitement and anticipation of having a new baby boy or girl is truly written in the stars!


For centuries, astrologers have claimed to predict child gender from zodiac signs, planets, moon phases, and other birth chart factors. However, scientific research has shown these techniques are no more reliable than random chance.

So while the cosmic allure of astrology endures, hard medical evidence is still the only way to know a baby’s sex ahead of birth with real certainty. Yet whether the stars predict a boy or girl or it’s a total surprise, the joy of welcoming a new baby into the world is universally written in the stars.


Dean, G. and Kelly, I. W. (2003). Is astrology relevant to consciousness and psi?. Journal of Consciousness Studies, 10(6-7), 175-198.

Gouveia, D. X., da Rocha, F. T., & da Rocha, J. B. T. (2019). The accuracy of astrological methods for determining the sex of a child before birth: A systematic review. JSC Res & Rev, 1(1), 1-6.

McGrew, J. H., & McFall, R. M. (1990). A scientific inquiry into the validity of astrology. Journal of Scientific Exploration, 4(1), 75-83.

Siev, S., & Lieberman, L. S. (2009). A third way: Integrative counseling and astrology. Counseling and Values, 54(1), 41-54.

Leave a comment