Baby Gender Prediction at 8 Weeks
At 8 weeks, you're approaching the end of the embryonic period, and while AI analysis can begin to examine your scan, accuracy is still very limited. Your baby has all its major organs forming, but the external genitalia look the same in all embryos.
Your Baby at 8 Weeks
- ✦Baby is about 16mm — the size of a raspberry
- ✦All major organs are forming simultaneously
- ✦Tiny fingers and toes are clearly visible on scan
Gender Prediction Methods at 8 Weeks
Nub Theory
The nub hasn't differentiated at 8 weeks. While a genital tubercle exists, it looks the same in all embryos and cannot be reliably angled for nub theory.
Skull Theory
Too early for skull theory at 8 weeks. Skull shape differences between male and female don't emerge until 12+ weeks.
Chinese Gender Calendar
The Chinese Gender Calendar remains the only 'always available' method. Its accuracy has been studied and found to be roughly equivalent to chance.
AI Ultrasound Analysis
Our AI can examine your 8-week scan but accuracy is around 60% — barely above random chance. The anatomical markers are just beginning to emerge.
Get Your AI Gender Prediction
Upload your 8-week scan — our AI will give it a look, though we recommend waiting until 12 weeks for a more reliable reading.
Upload Your 8-Week Scan →Frequently Asked Questions
Can you tell the gender of a baby at 8 weeks?
Possibly, but with very low reliability. At 8 weeks, some AI tools can attempt analysis but the external genitalia haven't differentiated and accuracy is close to 50-60%.
How accurate is gender prediction at 8 weeks?
Around 55-60% at best from AI analysis, and no better than 50% from other methods. Meaningful gender prediction really begins at 12 weeks.
What does a boy/girl look like on an ultrasound at 8 weeks?
An 8-week scan shows a foetus with forming facial features and limb buds. There are no visible gender-distinguishing features — the external genitalia appear identical in all foetuses.