Baby gender predictor (just for fun)
This is a bit of fun based on the old Chinese gender chart, which pairs the mother's age at conception with the month of conception. It is a folk tradition with no scientific basis and is right about half the time by chance. BabyData labels it plainly as a novelty, not a medical test. The only reliable way to find out a baby's sex is an ultrasound scan or a medical test, so ask your midwife about your 20-week scan. Not medical advice.
Have a guess
A playful guess from an old folk chart. Just for fun, not a medical test.
Just for fun. This is a novelty based on an old folk chart. It is not a medical test and has no scientific basis. The only reliable way to find out is an ultrasound scan or a medical test.
How this works (and why it is just for fun)
This uses the old Chinese gender chart, a folk method that pairs the mother's age at conception with the month of conception to "predict" a boy or a girl. Our version reads the chart with a simple parity rule on those two numbers, so the same inputs always give the same playful answer.
Guess = parity of (mother's age + conception month)
There is no evidence any chart can predict a baby's sex. The result is random fun and right about half the time by chance. For a real answer, ask about your 20-week scan or a medical test. Not medical advice.
Common questions
Can this predict my baby's sex?
No. This is a novelty based on the old Chinese gender chart and has no scientific basis, so it is right only about half the time by chance. The only reliable way to find out is an ultrasound scan or a medical test.
How does the chart work?
It pairs the mother's age at conception with the month of conception and returns a playful boy-or-girl guess using a simple parity rule, so the same inputs always give the same answer. It is a bit of fun from a folk tradition, not a test.
When can I find out my baby's sex for real?
Many people are offered the chance to find out at the 20-week scan, if the sonographer can see clearly and your hospital offers it. Ask your midwife about your own scan. This is general information, not medical advice.
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Editor, BabyData
Oliver Mackman is the named editor of BabyData and a director of Best Business Loans Ltd (Companies House 16833937), the company that operates the site. He is accountable for its editorial standards, sourcing and corrections, and requires every number to cite the underlying rule and the official UK dataset behind it, with pregnancy tools reviewed against NHS and gov.uk guidance before publication.
Last reviewed: 12 June 2026