Baby Gender Prediction at 14 Weeks
Welcome to the second trimester! At 14 weeks, the external genitalia are becoming clearer and gender prediction accuracy improves further. This is when many parents first get a reliable early prediction.
Your Baby at 14 Weeks
- ✦Baby is about 80mm — the size of a lemon
- ✦Baby can make facial expressions including squinting and frowning
- ✦The roof of the mouth is fully formed
Gender Prediction Methods at 14 Weeks
Nub Theory
The nub is well-defined at 14 weeks and gender prediction using nub theory is highly reliable. Accuracy is around 80-85% from a good quality scan.
Skull Theory
Skull theory is strong at 14 weeks. The rounded, more vertical skull profile of girls versus the sloped brow of boys is increasingly distinct. Accuracy is around 75-80%.
Chinese Gender Calendar
The Chinese Gender Calendar is always an option — quick and easy to calculate, though less accurate than ultrasound-based methods.
AI Ultrasound Analysis
AI analysis at 14 weeks can examine the more developed genitalia directly alongside skull and nub features, pushing accuracy to around 85%.
Get Your AI Gender Prediction
Upload your 14-week scan — your baby's gender markers are getting clearer and our AI can now give you a strong early prediction.
Upload Your 14-Week Scan →Frequently Asked Questions
Can you tell the gender of a baby at 14 weeks?
Yes — 14 weeks is a reliable time for gender prediction. The external genitalia are differentiating clearly and ultrasound-based methods reach around 80-85% accuracy.
How accurate is gender prediction at 14 weeks?
About 80-85% from AI analysis and nub theory, and around 75-80% from skull theory. The second trimester brings a meaningful jump in prediction confidence.
What does a boy/girl look like on an ultrasound at 14 weeks?
At 14 weeks, the penis and scrotum are forming in boys, while the labia and clitoris are developing in girls. These are increasingly visible on a clear ultrasound image.