Baby Gender Prediction at 6 Weeks
At 6 weeks, your baby is the size of a sweet pea and gender prediction is simply too early — the external genitalia haven't even begun to differentiate yet. While some old wives' tales apply at any stage, no ultrasound-based method can reliably indicate boy or girl this early.
Your Baby at 6 Weeks
- ✦The embryo measures about 6mm — roughly the size of a sweet pea
- ✦The heart is beating at around 90-110 beats per minute
- ✦Arm and leg buds are just beginning to form
Gender Prediction Methods at 6 Weeks
Nub Theory
The nub theory requires a distinct genital tubercle to be visible — this hasn't formed yet at 6 weeks. No nub reading is possible.
Skull Theory
Skull differentiation between male and female is non-existent at 6 weeks. The skull theory cannot be applied this early.
Chinese Gender Calendar
The Chinese Gender Calendar uses your age at conception and the month you conceived — it can always be calculated, though studies show accuracy closer to 50/50.
AI Ultrasound Analysis
AI ultrasound analysis has nothing to work with at 6 weeks. The anatomical markers needed for prediction haven't developed yet.
Get Your AI Gender Prediction
Upload your 6-week scan and let our AI confirm your pregnancy — gender prediction becomes available from 12 weeks onwards.
Upload Your 6-Week Scan →Frequently Asked Questions
Can you tell the gender of a baby at 6 weeks?
No — at 6 weeks, the external genitalia have not yet differentiated. The embryo is still in the earliest stages of development and there are no visible markers to distinguish male from female.
How accurate is gender prediction at 6 weeks?
No reliable method exists at 6 weeks. The earliest any ultrasound-based technique becomes marginally useful is around 11-12 weeks. For now, only the Chinese Gender Calendar applies, with ~50% accuracy.
What does a boy/girl look like on an ultrasound at 6 weeks?
At 6 weeks, an ultrasound shows a small embryo with a visible heartbeat — nothing resembling developed genitalia. Gender-specific anatomy simply hasn't formed yet.